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[TH] Thailand Holiday Categories
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@PPsyrius
PPsyrius committed Jun 29, 2023
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157 changes: 122 additions & 35 deletions holidays/countries/thailand.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,25 @@
from datetime import timedelta as td
from gettext import gettext as tr

from holidays.constants import JAN, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP, OCT, NOV, DEC
from holidays.constants import (
JAN,
FEB,
MAR,
APR,
MAY,
JUN,
JUL,
AUG,
SEP,
OCT,
NOV,
DEC,
MON,
SAT,
BANK,
GOVERNMENT,
PUBLIC,
)
from holidays.holiday_base import HolidayBase
from holidays.holiday_groups import InternationalHolidays, ThaiCalendarHolidays

Expand All @@ -33,6 +51,8 @@ class Thailand(HolidayBase, InternationalHolidays, ThaiCalendarHolidays):
https://github.com/dr-prodigy/python-holidays/pull/929
- [New Year's Day]
(wikisource.org 's wbm) http://tiny.cc/wa_wiki_thai_newyear_2483
- [National Children's Day]
https://thainews.prd.go.th/banner/th/children'sday/
- [Chakri Memorial Day]
(ocac.got.th 's wbm) http://tiny.cc/wa_ocac_chakri
- [Songkran Festival]
Expand Down Expand Up @@ -109,7 +129,9 @@ class Thailand(HolidayBase, InternationalHolidays, ThaiCalendarHolidays):
"""

country = "TH"
supported_categories = {BANK, GOVERNMENT, PUBLIC}
default_language = "th"
supported_languages = ("en_US", "th")

# วันหยุดพิเศษ (เพิ่มเติม) - see Bank of Thailand's DB for Cross-Check.

Expand Down Expand Up @@ -250,17 +272,16 @@ class Thailand(HolidayBase, InternationalHolidays, ThaiCalendarHolidays):
),
2023: (MAY, 5, thai_bridge_public_holiday),
}
supported_languages = ("en_US", "th")

def __init__(self, **kwargs) -> None:
InternationalHolidays.__init__(self)
ThaiCalendarHolidays.__init__(self)
super().__init__(**kwargs)

def _populate(self, year):
def _populate_public_holidays(self):
# Due to Thai Calendar Migration, this is capped off at 1941.
# But certain holidays were implemented before 1941.
if year <= 1940:
if self._year <= 1940:
return None

def _add_observed(dt: date) -> None:
Expand All @@ -284,15 +305,15 @@ def _add_observed(dt: date) -> None:
if (
self.observed
and self._is_weekend(dt)
and (1961 <= year <= 1973 or 1995 <= year <= 1997 or year >= 2001)
and (
1961 <= self._year <= 1973 or 1995 <= self._year <= 1997 or self._year >= 2001
)
):
in_lieu = dt + td(days=+2 if self._is_saturday(dt) else +1)
for name in self.get_list(dt):
# %s (in lieu)
self._add_holiday(self.tr("ชดเชย%s") % name, in_lieu)

super()._populate(year)

# Fixed Date Holidays

# วันขึ้นปีใหม่
Expand All @@ -314,12 +335,28 @@ def _add_observed(dt: date) -> None:

new_years_eve_in_lieu = self.tr("ชดเชย%s") % self.tr("วันสิ้นปี")

if self.observed and (1995 <= year <= 1997 or year >= 2001):
if self.observed and (1995 <= self._year <= 1997 or self._year >= 2001):
if self._is_sunday(jan_1):
self._add_new_years_day_three(new_years_eve_in_lieu)
elif self._is_monday(jan_1):
self._add_new_years_day_two(new_years_eve_in_lieu)

# วันเด็กแห่งชาติ
# Status: In-Use.
# Starts in 1955 as the 1st Monday of October.
# No event was held in 1964 due to date changes came into effect too late.
# Moved to 2nd Saturday of January since 1965.
# No in-lieus are observed, and still remain a Public Holidays than just Observed.

if self._year >= 1955 and self._year != 1964:
self._add_holiday(
# National Children's Day
tr("วันเด็กแห่งชาติ"),
self._get_nth_weekday_of_month(1, MON, OCT)
if self._year <= 1963
else self._get_nth_weekday_of_month(2, SAT, JAN),
)

# วันจักรี
# Status: In-Use.
# Starts in present form in 1918 (B.E. 2461).
Expand All @@ -341,12 +378,17 @@ def _add_observed(dt: date) -> None:
# (Except for 2020 due to Covid-19 outbreaks)
# This has its own in-lieu trigger.

if year >= 1948:
if self._year >= 1948:
# Songkran Festival.
songkran_festival = tr("วันสงกรานต์")
if year <= 1953 or (1957 <= year != 2020):
dt = self._add_holiday(songkran_festival, APR, 12 if 1989 <= year <= 1997 else 13)
if 1957 <= year <= 1988:
if self._year <= 1953 or (1957 <= self._year != 2020):
dt = self._add_holiday(
songkran_festival,
date(self._year, APR, 12)
if 1989 <= self._year <= 1997
else date(self._year, APR, 13),
)
if 1957 <= self._year <= 1988:
_add_observed(dt)
else:
self._add_holiday(songkran_festival, dt + td(days=+1))
Expand All @@ -363,7 +405,7 @@ def _add_observed(dt: date) -> None:

songkran_festival_in_lieu = self.tr("ชดเชย%s") % songkran_festival

if self.observed and (1995 <= year <= 1997 or 2001 <= year != 2020):
if self.observed and (1995 <= self._year <= 1997 or 2001 <= self._year != 2020):
if self._is_thursday(dt):
self._add_holiday(songkran_festival_in_lieu, dt + td(days=+4))
elif self._is_friday(dt) or self._is_saturday(dt):
Expand All @@ -375,7 +417,7 @@ def _add_observed(dt: date) -> None:
# Does existed officially since 1956 (B.E. 2499), but wasn't a public holiday until then.
# *** NOTE: only observed by financial and private sectors.

if year >= 1974:
if self._year >= 1974:
# National Labour day.
_add_observed(self._add_labor_day(tr("วันแรงงานแห่งชาติ")))

Expand All @@ -386,7 +428,9 @@ def _add_observed(dt: date) -> None:
# TODO: Add check for 1939 if we support earlier dates.

# National Day.
_add_observed(self._add_holiday(tr("วันชาติ"), *((JUN, 24) if year <= 1959 else (DEC, 5))))
_add_observed(
self._add_holiday(tr("วันชาติ"), *((JUN, 24) if self._year <= 1959 else (DEC, 5)))
)

# วันฉัตรมงคล
# Starts in 1958 (B.E. 2501) for Rama IX's Coronation: May 5th.
Expand All @@ -396,16 +440,16 @@ def _add_observed(dt: date) -> None:
# Coronation Day.
coronation_day = tr("วันฉัตรมงคล")

if 1958 <= year <= 2016:
if 1958 <= self._year <= 2016:
_add_observed(self._add_holiday(coronation_day, MAY, 5))
elif year >= 2020:
elif self._year >= 2020:
_add_observed(self._add_holiday(coronation_day, MAY, 4))

# วันเฉลิมพระชนมพรรษา พระราชินี
# Status: In-Use.
# Starts in 2019 (B.E. 2562).

if year >= 2019:
if self._year >= 2019:
_add_observed(
self._add_holiday(
# HM Queen Suthida's Birthday.
Expand All @@ -419,7 +463,7 @@ def _add_observed(dt: date) -> None:
# Status: In-Use.
# Started in 2017 (B.E 2560).

if year >= 2017:
if self._year >= 2017:
_add_observed(
self._add_holiday(
# HM King Maha Vajiralongkorn's Birthday.
Expand All @@ -439,11 +483,11 @@ def _add_observed(dt: date) -> None:
# Initial celebration as HM Queen Sirikit's Birthday.
# Now acts as the Queen Mother from 2017 onwards.

if year >= 1976:
if self._year >= 1976:
name = (
# HM Queen Sirikit the Queen Mother's Birthday.
tr("วันเฉลิมพระชนมพรรษาสมเด็จพระบรมราชชนนีพันปีหลวง")
if year >= 2017
if self._year >= 2017
# HM Queen Sirikit's Birthday.
else tr("วันเฉลิมพระชนมพรรษาสมเด็จพระนางเจ้าสิริกิติ์ พระบรมราชินีนาถ")
)
Expand All @@ -459,24 +503,24 @@ def _add_observed(dt: date) -> None:
# National Mother's Day.
thai_mothers_day = tr("วันแม่แห่งชาติ")

if 1950 <= year <= 1957:
if 1950 <= self._year <= 1957:
_add_observed(self._add_holiday(thai_mothers_day, APR, 15))
elif year >= 1976:
elif self._year >= 1976:
_add_observed(self._add_holiday(thai_mothers_day, AUG, 12))

# วันคล้ายวันสวรรคตพระบาทสมเด็จพระปรมินทร มหาภูมิพลอดุลยเดช บรมนาถบพิตร
# Status: In-Use.
# Started in 2017 (B.E 2560).
# Got conferred with 'the Great' title in 2019 (B.E. 2562).

if year >= 2017:
if self._year >= 2017:
name = (
# Anniversary for the Death of King Bhumibol Adulyadej the Great.
tr(
"วันคล้ายวันสวรรคตพระบาทสมเด็จพระบรมชนกาธิเบศร "
"มหาภูมิพลอดุลยเดชมหาราช บรมนาถบพิตร"
)
if year >= 2019
if self._year >= 2019
# Anniversary for the Death of King Bhumibol Adulyadej.
else tr("วันคล้ายวันสวรรคตพระบาทสมเด็จพระปรมินทรมหาภูมิพลอดุลยเดช บรมนาถบพิตร")
)
Expand All @@ -497,21 +541,21 @@ def _add_observed(dt: date) -> None:
# Confirmed as still in-use in 2017.
# Got conferred with 'the Great' title in 2019 (B.E. 2562).

if year >= 1960:
if self._year >= 1960:
name = (
# HM King Bhumibol Adulyadej's the Great's Birthday Anniversary.
tr(
"วันคล้ายวันเฉลิมพระชนมพรรษาพระบาทสมเด็จพระบรม"
"ชนกาธิเบศร มหาภูมิพลอดุลยเดชมหาราช บรมนาถบพิตร"
)
if year >= 2019
if self._year >= 2019
else (
# HM King Bhumibol Adulyadej Birthday Anniversary.
tr(
"วันคล้ายวันเฉลิมพระชนมพรรษา"
"พระบาทสมเด็จพระปรมินทรมหาภูมิพลอดุลยเดช บรมนาถบพิตร"
)
if year >= 2016
if self._year >= 2016
# HM King Bhumibol Adulyadej Birthday Anniversary.
else tr(
"วันเฉลิมพระชนมพรรษาพระบาทสมเด็จพระปรมินทรมหาภูมิพลอดุลยเดช บรมนาถบพิตร"
Expand All @@ -526,7 +570,7 @@ def _add_observed(dt: date) -> None:
# Technically, a replication of HM King Bhumibol Adulyadej's Birthday
# but it's in the official calendar, so may as well have this here.

if year >= 1980:
if self._year >= 1980:
# National Father's Day.
_add_observed(self._add_holiday(tr("วันพ่อแห่งชาติ"), DEC, 5))

Expand Down Expand Up @@ -594,7 +638,7 @@ def _add_observed(dt: date) -> None:
if (
asarnha_bucha_date
and self.observed
and (1961 <= year <= 1973 or 1995 <= year <= 1997 or year >= 2001)
and (1961 <= self._year <= 1973 or 1995 <= self._year <= 1997 or self._year >= 2001)
):
if self._is_friday(asarnha_bucha_date):
self._add_holiday(
Expand All @@ -605,11 +649,54 @@ def _add_observed(dt: date) -> None:
self.tr("ชดเชย%s") % self.tr("วันอาสาฬหบูชา"), asarnha_bucha_date + td(days=+2)
)

def _populate_bank_holidays(self):
# Due to Thai Calendar Migration, this is capped off at 1941.
# But certain holidays were implemented before 1941.
if self._year <= 1940:
return None

# Bank Holidays

# วันหยุดเพิ่มเติมสำหรับการปิดบัญชีประจำปีของธนาคารเพื่อการเกษตรและสหกรณ์การเกษตร
# Status: Defunct.
# If held on the weekends, no in-lieus.
# Abandoned in 2022.

if self._year <= 2021:
self._add_holiday(
# Additional Closing Day for Bank for Agriculture and Agricultural Cooperatives
tr(
"วันหยุดเพิ่มเติมสำหรับการปิดบัญชีประจำปีของ"
"ธนาคารเพื่อการเกษตรและสหกรณ์การเกษตร"
),
APR,
1,
)

# วันหยุดภาคครึ่งปีของสถาบันการเงินและสถาบันการเงินเฉพาะกิจ
# Status: Defunct.
# If held on the weekends, no in-lieus.
# Abandoned in 2019.

if self._year <= 2018:
self._add_holiday(
# Mid-Year Closing Day
tr("วันหยุดภาคครึ่งปีของสถาบันการเงินและสถาบันการเงินเฉพาะกิจ"),
JUL,
1,
)

def _populate_government_holidays(self):
# Due to Thai Calendar Migration, this is capped off at 1941.
# But certain holidays were implemented before 1941.
if self._year <= 1940:
return None

# No Future Fixed Date Holidays

# วันพืชมงคล
# Restarts in 1957 (B.E. 2500).
# Is dated on an annual basis by the Royal Palace.
# Is dated on an annual basis by the Royal Palace, always on weekdays.
# This isn't even fixed even by the Thai Lunar Calendar, but instead
# by Court Astrologers; All chosen dates are all around May, so we
# can technically assign it to 13 May for years prior with no data.
Expand Down Expand Up @@ -649,11 +736,11 @@ def _add_observed(dt: date) -> None:
2023: (MAY, 11),
}
# For years with exact date data.
if year in raeknakhwan_dates:
_add_observed(self._add_holiday(raeknakhwan, *raeknakhwan_dates[year]))
if self._year in raeknakhwan_dates:
self._add_holiday(raeknakhwan, *raeknakhwan_dates[self._year])
# Approx. otherwise for 1957-2013.
elif 1957 <= year <= 1996:
_add_observed(self._add_holiday(raeknakhwan, MAY, 13))
elif 1957 <= self._year <= 1996:
self._add_holiday(raeknakhwan, MAY, 13)


class TH(Thailand):
Expand Down

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