some new features

.venv/lib/python3.12/site-packages/holidays/countries/sint_maarten.py

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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 gettext import gettext as tr
+
+from holidays.groups import ChristianHolidays, InternationalHolidays
+from holidays.observed_holiday_base import (
+    ObservedHolidayBase,
+    SAT_TO_PREV_FRI,
+    SUN_TO_PREV_SAT,
+    SUN_TO_NEXT_MON,
+    SUN_TO_NEXT_TUE,
+)
+
+
+class SintMaarten(ObservedHolidayBase, ChristianHolidays, InternationalHolidays):
+    """Sint Maarten holidays.
+
+    References:
+        * <https://en.wikipedia.org/wiki/Public_holidays_in_Sint_Maarten>
+        * [AB 2012 no. 19](https://web.archive.org/web/20250615040244/https://www.sintmaartengov.org/Documents/Official%20Publications/AB%2019%20Lvo%20Dag%20van%20Bevrijding.pdf)
+        * [AB 2015 no. 24](https://web.archive.org/web/20250615035932/https://www.sintmaartengov.org/Documents/Official%20Publications/AB%2024%20Landsverordening%20Constitution%20Day.pdf)
+        * [2014-2023](https://web.archive.org/web/20230307083630/https://www.sintmaartengov.org/government/VSA/labour/Pages/Public-Holiday-Schedule.aspx)
+        * [2024-Present](https://web.archive.org/web/20250212071023/https://www.sintmaartengov.org/Pages/Public-Holiday-Schedule.aspx)
+    """
+
+    country = "SX"
+    default_language = "nl"
+    supported_languages = ("en_US", "nl")
+    # Sint Maarten became a constituent country on October 10th, 2010.
+    start_year = 2011
+
+    def __init__(self, *args, **kwargs):
+        ChristianHolidays.__init__(self)
+        InternationalHolidays.__init__(self)
+        kwargs.setdefault("observed_rule", SUN_TO_NEXT_MON)
+        super().__init__(*args, **kwargs)
+
+    def _populate_public_holidays(self):
+        # New Year's Day.
+        self._add_new_years_day(tr("Nieuwjaarsdag"))
+
+        # Good Friday.
+        self._add_good_friday(tr("Goede Vrijdag"))
+
+        # Easter Sunday.
+        self._add_easter_sunday(tr("Eerste paasdag"))
+
+        # Easter Monday.
+        self._add_easter_monday(tr("Tweede paasdag"))
+
+        self._move_holiday(
+            # King's Day.
+            self._add_holiday_apr_27(tr("Koningsdag"))
+            if self._year >= 2014
+            # Queen's Day.
+            else self._add_holiday_apr_30(tr("Koninginnedag")),
+            rule=SUN_TO_PREV_SAT,
+        )
+
+        # Carnival Day.
+        name = tr("Carnavalsdag")
+        if self._year >= 2014:
+            self._move_holiday(
+                self._add_holiday_apr_30(name), rule=SAT_TO_PREV_FRI + SUN_TO_NEXT_TUE
+            )
+        else:
+            self._add_holiday_apr_29(name)
+
+        # Labor Day.
+        self._add_labor_day(tr("Dag van de Arbeid"))
+
+        # Ascension Day.
+        self._add_ascension_thursday(tr("Hemelvaartsdag"))
+
+        # Whit Sunday.
+        self._add_whit_sunday(tr("Eerste Pinksterdag"))
+
+        # Established on June 13th, 2012.
+        if self._year >= 2012:
+            # Emancipation Day.
+            self._move_holiday(self._add_holiday_jul_1(tr("Dag van de Bevrijding")))
+
+        # Established on September 28th, 2015.
+        if self._year >= 2015:
+            # Constitution Day.
+            self._add_holiday_2nd_mon_of_oct(tr("Dag van de Constitutie"))
+
+        # Sint Maarten Day.
+        self._add_holiday_nov_11(tr("Sint-Maartensdag"))
+
+        # Replaced by Constitution Day on October 2nd, 2015.
+        if self._year <= 2014:
+            # Kingdom Day.
+            self._move_holiday(self._add_holiday_dec_15(tr("Koninkrijksdag")))
+
+        # Christmas Day.
+        self._add_christmas_day(tr("Eerste Kerstdag"))
+
+        # Second Day of Christmas.
+        self._add_christmas_day_two(tr("Tweede Kerstdag"))
+
+
+class SX(SintMaarten):
+    pass
+
+
+class SXM(SintMaarten):
+    pass