module Holidays
module DateCalculator
# Copied from https://github.com/sunsidew/ruby_lunardate
# Graciously allowed by JeeWoong Yang (https://github.com/sunsidew)
class LunarDate
attr_accessor :year, :month, :day
def to_solar(year, month, day, region)
days = 0
year_diff = year - 1900
year_info = CALENDAR_YEAR_INFO_MAP[region]
year_diff.times do |year_idx|
days += year_info[year_idx][0]
end
(month - 1).times do |month_idx|
total, _normal, _leap = lunardays_for_type(year_info[year_diff][month_idx + 1])
days += total
end
days += (day - 1)
SOLAR_START_DATE + days
end
def lunardays_for_type(month_type)
LUNARDAYS_FOR_MONTHTYPE[month_type]
end
def to_s
format('%4d%02d%02d', year, month, day)
end
private
VIETNAMESE_LUNAR_YEAR_INFO = [
[384, 1, 2, 1, 1, 2, 1, 2, 4, 2, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[355, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[383, 1, 2, 1, 2, 3, 2, 1, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1].freeze,
[355, 2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 2, 2, 5, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 2, 1, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 4, 1, 2, 1, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[384, 2, 1, 2, 1, 1, 4, 1, 2, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 2, 2, 1, 2, 4, 1, 2, 1, 2, 1, 1, 2].freeze,
[355, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[384, 2, 3, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1, 2].freeze,
[384, 1, 2, 1, 1, 2, 1, 4, 2, 2, 1, 2, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 2, 3, 2, 1, 1, 2, 1, 2, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 1, 2].freeze,
[354, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1, 1].freeze,
[385, 2, 1, 2, 4, 2, 1, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[384, 1, 4, 1, 2, 1, 1, 2, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2].freeze,
[383, 1, 2, 2, 1, 1, 4, 1, 2, 1, 2, 2, 1].freeze,
[354, 2, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 1, 2, 2, 1, 6, 1, 2, 1, 2, 1, 1, 2].freeze,
[355, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[384, 2, 1, 5, 1, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[354, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1].freeze,
[384, 2, 2, 1, 1, 2, 1, 5, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[384, 2, 2, 1, 2, 2, 5, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1, 1, 2].freeze,
[355, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 1, 2, 5, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[354, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2].freeze,
[384, 2, 4, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[384, 2, 2, 1, 2, 1, 2, 3, 2, 1, 2, 1, 2].freeze,
[354, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 2, 1, 2, 5, 2, 1, 2, 1, 2, 1, 2].freeze,
[355, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 2].freeze,
[354, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[384, 2, 1, 5, 1, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 1, 2, 1, 1, 4, 2, 1, 2, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1].freeze,
[384, 2, 1, 2, 1, 2, 4, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[384, 2, 1, 2, 3, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[355, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 2].freeze,
[383, 1, 2, 4, 2, 1, 1, 2, 1, 1, 2, 2, 1].freeze,
[355, 2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 2, 2, 1, 2, 1, 4, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 2, 1, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 2, 1, 1, 4, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 2, 1].freeze,
[384, 2, 2, 1, 4, 1, 2, 1, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 2, 2, 1, 2, 1, 2, 1, 4, 2, 1, 1, 2].freeze,
[354, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 1].freeze,
[355, 2, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[384, 2, 1, 1, 2, 1, 6, 1, 2, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 3, 2, 1, 1, 2, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 2, 1, 1, 2, 1, 1, 4, 2, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 1, 1].freeze,
[385, 2, 1, 2, 2, 1, 4, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[384, 1, 2, 1, 1, 4, 1, 2, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2].freeze,
[383, 1, 2, 4, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 1, 2, 2, 1, 2, 2, 1, 4, 2, 1, 1, 2].freeze,
[355, 1, 2, 1, 2, 2, 1, 2, 1, 2, 2, 1, 2].freeze,
[354, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[384, 2, 1, 1, 2, 3, 2, 2, 1, 2, 2, 2, 1].freeze,
[354, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1].freeze,
[354, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1].freeze,
[384, 2, 2, 2, 3, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 1, 4, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1, 1].freeze,
[385, 2, 1, 2, 1, 2, 1, 4, 2, 2, 1, 2, 2].freeze,
[354, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2].freeze,
[384, 2, 2, 1, 1, 4, 1, 2, 1, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[384, 2, 1, 6, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 2, 1, 2, 1, 2, 1, 2, 4, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[355, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[384, 2, 1, 2, 4, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 4, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[384, 2, 1, 2, 1, 1, 4, 2, 1, 2, 2, 2, 1].freeze,
[355, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 2].freeze,
[383, 1, 2, 2, 1, 4, 1, 2, 1, 1, 2, 2, 1].freeze,
[355, 2, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 2].freeze,
[354, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1].freeze,
[384, 2, 1, 4, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 4, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2].freeze,
[384, 2, 2, 1, 2, 1, 5, 1, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1].freeze,
[384, 2, 2, 1, 2, 4, 2, 1, 2, 1, 2, 1, 1].freeze,
[355, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 4, 1, 2, 1, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 1, 1, 2, 3, 2, 1, 2, 2, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 2, 1, 2, 2, 5, 1, 2, 1, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 1, 1].freeze,
[355, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1].freeze
].freeze
KOREAN_LUNAR_YEAR_INFO = [
[384, 1, 2, 1, 1, 2, 1, 2, 4, 2, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[355, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[383, 1, 2, 1, 2, 3, 2, 1, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1].freeze,
[355, 2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 2, 2, 5, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 2, 1, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 4, 1, 2, 1, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[384, 2, 1, 2, 1, 1, 4, 1, 2, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 2, 2, 1, 2, 4, 1, 2, 1, 2, 1, 1, 2].freeze,
[355, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[384, 2, 3, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1, 2].freeze,
[384, 1, 2, 1, 1, 2, 1, 4, 2, 2, 1, 2, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 2, 3, 2, 1, 1, 2, 1, 2, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 1, 2].freeze,
[354, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1, 1].freeze,
[385, 2, 1, 2, 4, 2, 1, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[384, 1, 4, 1, 2, 1, 1, 2, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2].freeze,
[383, 1, 2, 2, 1, 1, 4, 1, 2, 1, 2, 2, 1].freeze,
[354, 2, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 1, 2, 2, 1, 6, 1, 2, 1, 2, 1, 1, 2].freeze,
[355, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[384, 2, 1, 5, 1, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[354, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1].freeze,
[384, 2, 2, 1, 1, 2, 1, 5, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[384, 2, 2, 1, 2, 2, 5, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1, 1, 2].freeze,
[355, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 1, 2, 5, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[354, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2].freeze,
[384, 2, 4, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[384, 2, 2, 1, 2, 1, 2, 3, 2, 1, 2, 1, 2].freeze,
[354, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 2, 1, 2, 5, 2, 1, 2, 1, 2, 1, 2].freeze,
[355, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 2].freeze,
[354, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[384, 2, 1, 5, 1, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 1, 2, 1, 1, 4, 2, 1, 2, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1].freeze,
[384, 2, 1, 2, 1, 2, 4, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[384, 2, 1, 2, 3, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[355, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 2].freeze,
[383, 1, 2, 4, 2, 1, 1, 2, 1, 1, 2, 2, 1].freeze,
[355, 2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 2, 2, 1, 2, 1, 4, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 2, 1, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 2, 1, 1, 4, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 2, 1].freeze,
[384, 2, 2, 1, 4, 1, 2, 1, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 2, 2, 1, 2, 1, 2, 1, 4, 2, 1, 1, 2].freeze,
[354, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 1].freeze,
[355, 2, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[384, 2, 1, 1, 2, 1, 6, 1, 2, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 3, 2, 1, 1, 2, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 2, 1, 1, 2, 1, 1, 4, 2, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 1, 1].freeze,
[385, 2, 1, 2, 2, 1, 4, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[384, 1, 2, 1, 1, 4, 1, 2, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2].freeze,
[383, 1, 2, 4, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 1, 2, 2, 1, 2, 2, 1, 4, 2, 1, 1, 2].freeze,
[355, 1, 2, 1, 2, 2, 1, 2, 1, 2, 2, 1, 2].freeze,
[354, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[384, 2, 1, 1, 2, 3, 2, 2, 1, 2, 2, 2, 1].freeze,
[354, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1].freeze,
[354, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1].freeze,
[384, 2, 2, 2, 3, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 1, 4, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1, 1].freeze,
[385, 2, 1, 2, 1, 2, 1, 4, 2, 2, 1, 2, 2].freeze,
[354, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2].freeze,
[384, 2, 2, 1, 1, 4, 1, 2, 1, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[384, 2, 1, 6, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 2, 1, 2, 1, 2, 1, 2, 4, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[384, 1, 2, 1, 2, 3, 2, 1, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[384, 2, 1, 2, 4, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 4, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[384, 2, 1, 2, 1, 1, 4, 2, 1, 2, 2, 2, 1].freeze,
[355, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 2].freeze,
[383, 1, 2, 2, 1, 4, 1, 2, 1, 1, 2, 2, 1].freeze,
[355, 2, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 2].freeze,
[354, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1].freeze,
[384, 2, 1, 4, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 4, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2].freeze,
[384, 2, 2, 1, 2, 1, 5, 1, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1].freeze,
[384, 2, 2, 1, 2, 4, 2, 1, 2, 1, 2, 1, 1].freeze,
[355, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 4, 1, 2, 1, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 1, 1, 2, 3, 2, 1, 2, 2, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 2, 1, 2, 2, 5, 1, 2, 1, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 1, 1].freeze,
[355, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1].freeze
].freeze
# Source: https://github.com/hungtcs/traditional-chinese-calendar-database/blob/master/database/all.json
CHINESE_LUNAR_YEAR_INFO = [
[384, 1, 2, 1, 1, 2, 1, 2, 4, 2, 2, 1, 2].freeze, # 1900 unavailable, filled with data from Vietnamese calendar
[354, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[355, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[383, 1, 2, 1, 2, 3, 2, 1, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1].freeze,
[355, 2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 2, 2, 5, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 2, 1, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 4, 1, 2, 1, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[384, 2, 1, 2, 1, 1, 4, 1, 2, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 2, 2, 1, 2, 5, 1, 2, 1, 1, 2, 1, 2].freeze,
[354, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 1].freeze,
[355, 2, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[384, 2, 3, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[384, 1, 2, 1, 1, 2, 1, 5, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 2, 3, 2, 1, 1, 2, 1, 2, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 1, 1].freeze,
[385, 2, 1, 2, 5, 2, 1, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[384, 1, 4, 1, 2, 1, 1, 2, 1, 2, 2, 2, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2].freeze,
[383, 1, 2, 2, 1, 1, 4, 1, 2, 1, 2, 2, 1].freeze,
[354, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 1, 2, 2, 1, 6, 1, 2, 1, 2, 1, 1, 2].freeze,
[355, 1, 2, 1, 2, 2, 1, 2, 1, 2, 2, 1, 2].freeze,
[354, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[384, 2, 1, 5, 1, 1, 2, 2, 1, 2, 2, 2, 1].freeze,
[354, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1].freeze,
[384, 2, 2, 1, 1, 2, 1, 5, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[384, 2, 2, 1, 2, 2, 5, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[385, 2, 1, 2, 5, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[354, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2].freeze,
[384, 2, 4, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[384, 2, 1, 2, 2, 1, 2, 3, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 1].freeze, # 1950
[355, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 2, 1, 2, 5, 1, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[384, 1, 2, 5, 1, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2].freeze,
[383, 2, 1, 2, 1, 2, 1, 1, 4, 2, 1, 2, 1].freeze,
[355, 2, 2, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1].freeze,
[384, 2, 1, 2, 1, 2, 4, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[384, 2, 1, 2, 3, 2, 1, 2, 1, 2, 2, 2, 1].freeze,
[355, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[353, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1].freeze,
[384, 2, 2, 4, 2, 1, 1, 2, 1, 1, 2, 2, 1].freeze,
[355, 2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 2, 1, 2, 2, 1, 4, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 2, 1, 1, 4, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2].freeze,
[384, 2, 2, 1, 4, 1, 2, 1, 1, 2, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 2, 2, 1, 2, 1, 2, 1, 4, 1, 2, 1, 2].freeze,
[354, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 1].freeze,
[355, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[384, 2, 1, 1, 2, 1, 6, 1, 2, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 3, 2, 1, 1, 2, 1, 2, 2, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 2, 1, 1, 2, 1, 1, 4, 2, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 1, 1].freeze,
[384, 2, 1, 2, 1, 2, 4, 2, 2, 1, 2, 1, 1].freeze,
[355, 2, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 1, 2, 1, 2, 2, 2].freeze,
[384, 1, 2, 1, 1, 4, 1, 2, 1, 2, 2, 2, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2].freeze,
[383, 1, 2, 4, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 1, 2, 2, 1, 2, 1, 2, 4, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 2, 2, 1, 2, 1, 2, 2, 1, 1].freeze,
[355, 2, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[384, 2, 1, 1, 2, 3, 2, 2, 1, 2, 2, 1, 2].freeze,
[354, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1].freeze,
[354, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1].freeze, # 2000
[384, 2, 2, 1, 4, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[355, 2, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 1, 4, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[385, 2, 1, 2, 1, 2, 1, 4, 2, 2, 1, 2, 2].freeze,
[354, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1, 2].freeze,
[354, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2].freeze,
[384, 2, 2, 1, 1, 4, 1, 2, 1, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 1].freeze,
[384, 2, 1, 2, 4, 2, 1, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 2, 1, 2, 1, 2, 1, 2, 4, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[384, 1, 2, 1, 2, 1, 5, 1, 2, 1, 2, 2, 2].freeze,
[354, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2].freeze,
[384, 1, 2, 2, 4, 2, 1, 1, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2].freeze,
[384, 1, 4, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1].freeze,
[384, 2, 1, 2, 1, 1, 4, 2, 1, 2, 2, 2, 1].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 2, 1].freeze,
[354, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1].freeze,
[384, 2, 2, 2, 1, 4, 1, 2, 1, 1, 2, 2, 1].freeze,
[355, 2, 2, 1, 2, 1, 2, 1, 2, 1, 1, 2, 2].freeze,
[354, 1, 2, 1, 2, 2, 1, 2, 1, 2, 1, 2, 1].freeze,
[384, 1, 2, 4, 2, 1, 2, 2, 1, 2, 1, 2, 1].freeze,
[355, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 4, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2].freeze,
[384, 2, 2, 1, 2, 1, 5, 1, 1, 2, 1, 2, 2].freeze,
[354, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2].freeze,
[354, 2, 2, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1].freeze,
[384, 2, 2, 1, 2, 4, 2, 1, 2, 1, 2, 1, 1].freeze,
[355, 2, 1, 2, 2, 1, 2, 1, 2, 2, 1, 2, 1].freeze,
[355, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2].freeze,
[384, 1, 4, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2].freeze,
[354, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2].freeze,
[384, 2, 1, 2, 1, 1, 2, 3, 2, 1, 2, 2, 2].freeze,
[354, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2].freeze,
[354, 2, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2].freeze,
[384, 2, 1, 2, 2, 5, 1, 2, 1, 1, 2, 1, 2].freeze,
[354, 1, 2, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1].freeze,
[355, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1].freeze, # 2049
].freeze
MAX_YEAR_NUMBER = 150
# Given the region, CALENDAR_YEAR_INFO_MAP looks up the date
# table and uses it in the calculation
CALENDAR_YEAR_INFO_MAP = {
kr: KOREAN_LUNAR_YEAR_INFO,
vi: VIETNAMESE_LUNAR_YEAR_INFO,
hk: CHINESE_LUNAR_YEAR_INFO,
}.freeze
# Provides number of days per lunar month type. Lunar months
# can be either 29 or 30 days long (29.5 days, rounded up or down).
# Keys 3 - 6 provide data for intercalary (leap month) occurrences.
# Format: [TOTAL, NORMAL, LEAP]
LUNARDAYS_FOR_MONTHTYPE = {
1 => [29, 29, 0],
2 => [30, 30, 0],
3 => [58, 29, 29],
4 => [59, 30, 29],
5 => [59, 29, 30],
6 => [60, 30, 30]
}.freeze
# Provides the reference point for the Gregorian calendar and is
# used in all calculations
SOLAR_START_DATE = Date.new(1900, 1, 31).freeze
end
end
end