Add SIX Swiss Exchange (SIX) holidays

README.md

@@ -2038,6 +2038,13 @@ code when available. The following financial markets are available:
 <td></td>
 </tr>
 <tr>
+<td>SIX Swiss Exchange</td>
+<td>XSWX</td>
+<td>SIX Swiss Exchange market holidays</td>
+<td><strong>de</strong>, en_US, fr, it, th, uk</td>
+<td></td>
+</tr>
+<tr>
 <td>Toronto Stock Exchange</td>
 <td>XTSE</td>
 <td>Toronto Stock Exchange (TSX) market holidays</td>

holidays/financial/__init__.py

@@ -28,4 +28,5 @@
 from holidays.financial.ny_stock_exchange import NewYorkStockExchange, XNYS, NYSE
 from holidays.financial.shanghai_stock_exchange import ShanghaiStockExchange, XSHG, SSE
 from holidays.financial.shenzhen_stock_exchange import ShenzhenStockExchange, XSHE, SZSE
+from holidays.financial.six_swiss_exchange import SIXSwissExchange, XSWX, SIX
 from holidays.financial.toronto_stock_exchange import TorontoStockExchange, XTSE, TSX

holidays/financial/six_swiss_exchange.py

@@ -0,0 +1,69 @@
+#  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.constants import PUBLIC
+from holidays.countries.switzerland import Switzerland
+from holidays.mixins.child_entity import ChildEntity
+from holidays.observed_holiday_base import SAT_TO_NONE, SUN_TO_NONE
+
+
+class SIXSwissExchange(ChildEntity, Switzerland):  # type: ignore[assignment, misc]
+    """SIX Swiss Exchange holidays.
+
+    References:
+        [2018](https://web.archive.org/web/20260712044834/https://www.six-group.com/dam/download/sites/education/preparatory-documentation/trading-module/trading-guide.pdf)
+        [2019](https://web.archive.org/web/20260712044834/https://www.six-group.com/dam/download/sites/education/preparatory-documentation/trading-module/trading-guide.pdf)
+        [2022](https://web.archive.org/web/20220420104843/https://www.six-group.com/dam/download/the-swiss-stock-exchange/trading/trading-provisions/regulation/trading-guides/trading-calendar-2022.pdf)
+        [2023](https://web.archive.org/web/20220626051815/https://www.six-group.com/dam/download/the-swiss-stock-exchange/trading/trading-provisions/regulation/trading-guides/trading-calendar-2023.pdf)
+        [2024](https://web.archive.org/web/20240910205011/https://www.six-group.com/en/market-data/news-tools/trading-currency-holiday-calendar.html#/#/)
+        [2025](https://web.archive.org/web/20250908065713/https://www.six-group.com/dam/download/the-swiss-stock-exchange/trading/trading-provisions/regulation/trading-guides/trading-calendar-2025.pdf)
+        [2026](https://web.archive.org/web/20251225182641/https://www.six-group.com/dam/download/the-swiss-stock-exchange/trading/trading-provisions/regulation/trading-guides/trading-calendar-2026.pdf)
+    """
+
+    country = None  # type: ignore[assignment]
+    market = "XSWX"
+    parent_entity = Switzerland
+    parent_entity_subdivision_code = "ZH"
+    supported_categories = (PUBLIC,)  # type: ignore[assignment]
+    start_year = 2000
+
+    _weekend_to_none_rule = SAT_TO_NONE + SUN_TO_NONE
+
+    def _populate_public_holidays(self) -> None:
+        super()._populate_public_holidays()
+
+        # Saint Berchtold's Day
+        self._add_new_years_day_two(tr("Berchtoldstag"))
+
+        # Christmas Eve.
+        self._add_christmas_eve(tr("Heiligabend"))
+
+        # New Year's Eve.
+        self._add_new_years_eve(tr("Vortag vor Neujahr"))
+
+    def _populate(self, year: int) -> None:
+        super()._populate(year)
+
+        if self.observed:
+            for dt in tuple(self.keys()):
+                if dt.year == year:
+                    self._move_holiday_forced(dt, rule=self._weekend_to_none_rule)
+
+
+class XSWX(SIXSwissExchange):
+    pass
+
+
+class SIX(SIXSwissExchange):
+    pass

holidays/locale/de/LC_MESSAGES/XSWX.po

@@ -0,0 +1,40 @@
+#  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)
+#
+# SIX Swiss Exchange holidays.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Holidays 0.101\n"
+"Report-Msgid-Bugs-To: l10n@vacanza.dev\n"
+"POT-Creation-Date: 2026-07-11 00:25+0000\n"
+"PO-Revision-Date: 2026-07-12 12:10+0000\n"
+"Last-Translator: Paresh Joshi <pareshjoshij@gmail.com>\n"
+"Language-Team: Holidays Localization Team\n"
+"Language: de\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Lingva 5.0.6\n"
+"X-Source-Language: de\n"
+
+#. Saint Berchtold's Day
+msgid "Berchtoldstag"
+msgstr ""
+
+#. Christmas Eve.
+msgid "Heiligabend"
+msgstr ""
+
+#. New Year's Eve.
+msgid "Vortag vor Neujahr"
+msgstr ""

holidays/locale/en_US/LC_MESSAGES/XSWX.po

@@ -0,0 +1,40 @@
+#  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)
+#
+# SIX Swiss Exchange holidays en_US localization.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Holidays 0.101\n"
+"Report-Msgid-Bugs-To: l10n@vacanza.dev\n"
+"POT-Creation-Date: 2026-07-11 00:25+0000\n"
+"PO-Revision-Date: 2026-07-12 12:10+0000\n"
+"Last-Translator: Paresh Joshi <pareshjoshij@gmail.com>\n"
+"Language-Team: Holidays Localization Team\n"
+"Language: en_US\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Lingva 5.0.6\n"
+"X-Source-Language: de\n"
+
+#. Saint Berchtold's Day
+msgid "Berchtoldstag"
+msgstr "Saint Berchtold's Day"
+
+#. Christmas Eve.
+msgid "Heiligabend"
+msgstr "Christmas Eve"
+
+#. New Year's Eve.
+msgid "Vortag vor Neujahr"
+msgstr "New Year's Eve"

holidays/locale/fr/LC_MESSAGES/XSWX.po

@@ -0,0 +1,40 @@
+#  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)
+#
+# SIX Swiss Exchange holidays fr localization.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Holidays 0.101\n"
+"Report-Msgid-Bugs-To: l10n@vacanza.dev\n"
+"POT-Creation-Date: 2026-07-11 00:25+0000\n"
+"PO-Revision-Date: 2026-07-12 12:10+0000\n"
+"Last-Translator: Paresh Joshi <194076591+pareshjoshij@users.noreply.github.com>\n"
+"Language-Team: Holidays Localization Team\n"
+"Language: fr\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Lingva 5.0.6\n"
+"X-Source-Language: de\n"
+
+#. Saint Berchtold's Day
+msgid "Berchtoldstag"
+msgstr "Saint-Berchtold"
+
+#. Christmas Eve.
+msgid "Heiligabend"
+msgstr "Veille de Noël"
+
+#. New Year's Eve.
+msgid "Vortag vor Neujahr"
+msgstr "Réveillon de la Saint-Sylvestre"

holidays/locale/it/LC_MESSAGES/XSWX.po

@@ -0,0 +1,40 @@
+#  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)
+#
+# SIX Swiss Exchange holidays it localization.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Holidays 0.101\n"
+"Report-Msgid-Bugs-To: l10n@vacanza.dev\n"
+"POT-Creation-Date: 2026-07-11 00:25+0000\n"
+"PO-Revision-Date: 2026-07-12 12:10+0000\n"
+"Last-Translator: Paresh Joshi <pareshjoshij@gmail.com>\n"
+"Language-Team: Holidays Localization Team\n"
+"Language: it\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Lingva 5.0.6\n"
+"X-Source-Language: de\n"
+
+#. Saint Berchtold's Day
+msgid "Berchtoldstag"
+msgstr "Giorno di Bertoldo"
+
+#. Christmas Eve.
+msgid "Heiligabend"
+msgstr "Vigilia di Natale"
+
+#. New Year's Eve.
+msgid "Vortag vor Neujahr"
+msgstr "Vigilia di Capodanno"

holidays/locale/th/LC_MESSAGES/XSWX.po

@@ -0,0 +1,40 @@
+#  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)
+#
+# SIX Swiss Exchange holidays th localization.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Holidays 0.101\n"
+"Report-Msgid-Bugs-To: l10n@vacanza.dev\n"
+"POT-Creation-Date: 2026-07-11 00:25+0000\n"
+"PO-Revision-Date: 2026-07-12 12:10+0000\n"
+"Last-Translator: Paresh Joshi <pareshjoshij@gmail.com>\n"
+"Language-Team: Holidays Localization Team\n"
+"Language: th\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Lingva 5.0.6\n"
+"X-Source-Language: de\n"
+
+#. Saint Berchtold's Day
+msgid "Berchtoldstag"
+msgstr "วันสมโภชนักบุญแบร์กโทลด์"
+
+#. Christmas Eve.
+msgid "Heiligabend"
+msgstr "วันคริสต์มาสอีฟ"
+
+#. New Year's Eve.
+msgid "Vortag vor Neujahr"
+msgstr "วันส่งท้ายปีเก่า"

holidays/locale/uk/LC_MESSAGES/XSWX.po

@@ -0,0 +1,40 @@
+#  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)
+#
+# SIX Swiss Exchange holidays uk localization.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Holidays 0.101\n"
+"Report-Msgid-Bugs-To: l10n@vacanza.dev\n"
+"POT-Creation-Date: 2026-07-11 00:25+0000\n"
+"PO-Revision-Date: 2026-07-12 12:10+0000\n"
+"Last-Translator: Paresh Joshi <pareshjoshij@gmail.com>\n"
+"Language-Team: Holidays Localization Team\n"
+"Language: uk\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Lingva 5.0.6\n"
+"X-Source-Language: de\n"
+
+#. Saint Berchtold's Day
+msgid "Berchtoldstag"
+msgstr "День Святого Бертольда"
+
+#. Christmas Eve.
+msgid "Heiligabend"
+msgstr "Святвечір"
+
+#. New Year's Eve.
+msgid "Vortag vor Neujahr"
+msgstr "Переддень Нового року"

holidays/registry.py

@@ -300,6 +300,7 @@
     "ny_stock_exchange": ("NewYorkStockExchange", "XNYS", "NYSE"),
     "shanghai_stock_exchange": ("ShanghaiStockExchange", "XSHG", "SSE"),
     "shenzhen_stock_exchange": ("ShenzhenStockExchange", "XSHE", "SZSE"),
+    "six_swiss_exchange": ("SIXSwissExchange", "XSWX", "SIX"),
     "toronto_stock_exchange": ("TorontoStockExchange", "XTSE", "TSX"),
 }