some new features

.venv/lib/python3.12/site-packages/holidays/countries/vanuatu.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 holidays.calendars.gregorian import JUL, OCT
+from holidays.groups import ChristianHolidays, InternationalHolidays, StaticHolidays
+from holidays.observed_holiday_base import ObservedHolidayBase, SUN_TO_NEXT_MON, MON_TO_NEXT_TUE
+
+
+class Vanuatu(ObservedHolidayBase, ChristianHolidays, InternationalHolidays, StaticHolidays):
+    """Vanuatu holidays.
+
+    References:
+        * <https://en.wikipedia.org/wiki/Public_holidays_in_Vanuatu>
+        * <https://web.archive.org/web/20250419100625/https://www.timeanddate.com/holidays/vanuatu>
+        * <https://web.archive.org/web/20250419062251/https://gov.vu/index.php/events/holidays>
+    """
+
+    country = "VU"
+    observed_label = "%s (observed)"
+    # On 30 July 1980, Vanuatu gained independence from Britain and France.
+    start_year = 1981
+
+    def __init__(self, *args, **kwargs):
+        ChristianHolidays.__init__(self)
+        InternationalHolidays.__init__(self)
+        StaticHolidays.__init__(self, VanuatuStaticHolidays)
+        kwargs.setdefault("observed_rule", SUN_TO_NEXT_MON)
+        super().__init__(*args, **kwargs)
+
+    def _populate_public_holidays(self):
+        # New Years Day.
+        self._add_observed(self._add_new_years_day("New Year's Day"))
+
+        if self._year >= 1999:
+            # Father Lini Day.
+            self._add_observed(self._add_holiday_feb_21("Father Lini Day"))
+
+        # Custom Chief's Day.
+        self._add_observed(self._add_holiday_mar_5("Custom Chief's Day"))
+
+        # Good Friday.
+        self._add_good_friday("Good Friday")
+
+        # Easter Monday.
+        self._add_easter_monday("Easter Monday")
+
+        # Labour Day.
+        self._add_observed(self._add_labor_day("Labour Day"))
+
+        # Ascension Day.
+        self._add_ascension_thursday("Ascension Day")
+
+        # Children's Day.
+        self._add_observed(self._add_holiday_jul_24("Children's Day"))
+
+        # Independence Day.
+        self._add_observed(self._add_holiday_jul_30("Independence Day"))
+
+        # Assumption Day.
+        self._add_observed(self._add_assumption_of_mary_day("Assumption Day"))
+
+        # Constitution Day.
+        self._add_observed(self._add_holiday_oct_5("Constitution Day"))
+
+        # Unity Day.
+        self._add_observed(self._add_holiday_nov_29("Unity Day"))
+
+        # Christmas Day.
+        self._add_christmas_day("Christmas Day")
+
+        # Family Day.
+        self._add_observed(
+            self._add_christmas_day_two("Family Day"), rule=SUN_TO_NEXT_MON + MON_TO_NEXT_TUE
+        )
+
+
+class VU(Vanuatu):
+    pass
+
+
+class VTU(Vanuatu):
+    pass
+
+
+class VanuatuStaticHolidays:
+    independence_anniversary = "40th Independence Anniversary"
+
+    special_public_holidays = {
+        2020: (
+            (JUL, 23, independence_anniversary),
+            (JUL, 27, independence_anniversary),
+            (JUL, 28, independence_anniversary),
+            (JUL, 29, independence_anniversary),
+            (JUL, 31, independence_anniversary),
+        ),
+        2022: (OCT, 13, "Election Day"),
+    }