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# holidays
# --------
# A fast, efficient Python library for generating country, province and state
# specific sets of holidays on the fly. It aims to make determining whether a
# specific date is a holiday as fast and flexible as possible.
#
# Authors: Vacanza Team and individual contributors (see CONTRIBUTORS file)
# dr-prodigy <dr.prodigy.github@gmail.com> (c) 2017-2023
# ryanss <ryanssdev@icloud.com> (c) 2014-2017
# Website: https://github.com/vacanza/holidays
# License: MIT (see LICENSE file)
from datetime import date
from gettext import gettext as tr
from holidays.calendars.gregorian import (
FEB,
MAR,
APR,
MAY,
JUN,
JUL,
AUG,
SEP,
OCT,
NOV,
_timedelta,
)
from holidays.constants import BANK, PUBLIC
from holidays.groups import InternationalHolidays, StaticHolidays
from holidays.observed_holiday_base import ObservedHolidayBase, SUN_TO_NEXT_WORKDAY
class Japan(ObservedHolidayBase, InternationalHolidays, StaticHolidays):
"""Japan holidays.
References:
* <https://en.wikipedia.org/wiki/Public_holidays_in_Japan>
* <https://web.archive.org/web/20240913161809/https://www.boj.or.jp/en/about/outline/holi.htm>
"""
country = "JP"
default_language = "ja"
supported_categories = (BANK, PUBLIC)
supported_languages = ("en_US", "ja", "th")
start_year = 1949
end_year = 2099
def __init__(self, *args, **kwargs) -> None:
InternationalHolidays.__init__(self)
StaticHolidays.__init__(self, cls=JapanStaticHolidays)
kwargs.setdefault("observed_rule", SUN_TO_NEXT_WORKDAY)
super().__init__(*args, **kwargs)
def _is_observed(self, dt: date) -> bool:
return dt >= date(1973, APR, 12)
def _populate_observed(self, dts: set[date]) -> None:
# When a national holiday falls on Sunday, next working day
# shall become a public holiday (振替休日) - substitute holiday.
for dt in sorted(dts):
# Substitute Holiday.
self._add_observed(dt, name=tr("振替休日"), show_observed_label=False)
# A weekday between national holidays becomes a holiday too (国民の休日) -
# national holiday.
# In 1986-2006 it was only May 4 (between Constitution Day and Children's Day).
# Since 2006, it may be only the day between Respect for the Aged Day and
# Autumnal Equinox Day (in September).
if self._year <= 1985:
return None
if self._year <= 2006:
may_4 = (MAY, 4)
if not self._is_monday(may_4) and not self._is_sunday(may_4):
# National Holiday.
self._add_holiday(tr("国民の休日"), may_4)
else:
for dt in dts:
if dt.month == SEP and _timedelta(dt, +2) in dts:
# National Holiday.
self._add_holiday(tr("国民の休日"), _timedelta(dt, +1))
break
def _populate_public_holidays(self):
dts_observed = set()
# New Year's Day.
dts_observed.add(self._add_new_years_day(tr("元日")))
# Coming of Age Day.
name = tr("成人の日")
dts_observed.add(
self._add_holiday_jan_15(name)
if self._year <= 1999
else self._add_holiday_2nd_mon_of_jan(name)
)
if self._year >= 1967:
# Foundation Day.
dts_observed.add(self._add_holiday_feb_11(tr("建国記念の日")))
if self._year != 2019:
# Emperor's Birthday.
name = tr("天皇誕生日")
if self._year >= 2020:
# Reiwa Emperor's Birthday.
dt = self._add_holiday_feb_23(name)
elif self._year >= 1989:
# Heisei Emperor's Birthday.
dt = self._add_holiday_dec_23(name)
else:
# Showa Emperor's Birthday.
dt = self._add_holiday_apr_29(name)
dts_observed.add(dt)
# Vernal Equinox Day.
dts_observed.add(self._add_holiday(tr("春分の日"), self._vernal_equinox_date))
if self._year >= 2007:
# Showa Day.
dts_observed.add(self._add_holiday_apr_29(tr("昭和の日")))
# Constitution Day.
dts_observed.add(self._add_holiday_may_3(tr("憲法記念日")))
if self._year >= 1989:
# Greenery Day.
name = tr("みどりの日")
dts_observed.add(
self._add_holiday_may_4(name)
if self._year >= 2007
else self._add_holiday_apr_29(name)
)
# Children's Day.
dts_observed.add(self._add_holiday_may_5(tr("こどもの日")))
if self._year >= 1996:
# Marine Day.
name = tr("海の日")
if self._year <= 2002:
dts_observed.add(self._add_holiday_jul_20(name))
else:
dates = {
2020: (JUL, 23),
2021: (JUL, 22),
}
dts_observed.add(self._add_holiday(name, dt)) if (
dt := dates.get(self._year)
) else dts_observed.add(self._add_holiday_3rd_mon_of_jul(name))
if self._year >= 2016:
dates = {
2020: (AUG, 10),
2021: (AUG, 8),
}
# Mountain Day.
name = tr("山の日")
dts_observed.add(self._add_holiday(name, dates.get(self._year, (AUG, 11))))
if self._year >= 1966:
# Respect for the Aged Day.
name = tr("敬老の日")
dts_observed.add(
self._add_holiday_3rd_mon_of_sep(name)
if self._year >= 2003
else self._add_holiday_sep_15(name)
)
# Autumnal Equinox Day.
dts_observed.add(self._add_holiday(tr("秋分の日"), self._autumnal_equinox_date))
# Physical Education and Sports Day.
if self._year >= 1966:
name = (
# Sports Day.
tr("スポーツの日")
if self._year >= 2020
# Physical Education Day.
else tr("体育の日")
)
if self._year >= 2000:
dates = {
2020: (JUL, 24),
2021: (JUL, 23),
}
dts_observed.add(self._add_holiday(name, dt)) if (
dt := dates.get(self._year)
) else dts_observed.add(self._add_holiday_2nd_mon_of_oct(name))
else:
dts_observed.add(self._add_holiday_oct_10(name))
# Culture Day.
dts_observed.add(self._add_holiday_nov_3(tr("文化の日")))
# Labor Thanksgiving Day.
dts_observed.add(self._add_holiday_nov_23(tr("勤労感謝の日")))
if self.observed:
self._populate_observed(dts_observed)
def _populate_bank_holidays(self):
# Bank Holiday.
name = tr("銀行休業日")
self._add_new_years_day(name)
self._add_new_years_day_two(name)
self._add_new_years_day_three(name)
self._add_new_years_eve(name)
@property
def _vernal_equinox_date(self) -> tuple[int, int]:
day = 20
if (
(self._year % 4 == 0 and self._year <= 1956)
or (self._year % 4 == 1 and self._year <= 1989)
or (self._year % 4 == 2 and self._year <= 2022)
or (self._year % 4 == 3 and self._year <= 2055)
):
day = 21
elif self._year % 4 == 0 and self._year >= 2092:
day = 19
return MAR, day
@property
def _autumnal_equinox_date(self) -> tuple[int, int]:
day = 23
if self._year % 4 == 3 and self._year <= 1979:
day = 24
elif (
(self._year % 4 == 0 and self._year >= 2012)
or (self._year % 4 == 1 and self._year >= 2045)
or (self._year % 4 == 2 and self._year >= 2078)
):
day = 22
return SEP, day
class JP(Japan):
pass
class JPN(Japan):
pass
class JapanStaticHolidays:
national_holiday = tr("国民の休日")
special_public_holidays = {
1959: (APR, 10, tr("結婚の儀")), # The Crown Prince marriage ceremony.
1989: (FEB, 24, tr("大喪の礼")), # State Funeral of Emperor Shōwa.
1990: (NOV, 12, tr("即位礼正殿の儀")), # Enthronement ceremony.
1993: (JUN, 9, tr("結婚の儀")), # The Crown Prince marriage ceremony.
2019: (
(MAY, 1, tr("天皇の即位の日")), # Enthronement day.
(OCT, 22, tr("即位礼正殿の儀が行われる日")), # Enthronement ceremony.
),
}
special_public_holidays_observed = {
2019: (
(APR, 30, national_holiday),
(MAY, 2, national_holiday),
),
}
|
