Data sources
All dates on Kalatlas are generated from open datasets; records that conflict with an official source are corrected by hand and the source of each correction is listed below.
Sources and versions
- Public and religious holidays: python-holidays 0.105 (MIT licence), data generated 2026-10-05.
- Country names: Unicode CLDR (Babel 2.18.0).
- Time zone → country mapping: IANA tz database (zone.tab).
- Stock exchange closures: official holiday calendars published by each exchange.
- School holidays (Türkiye): Ministry of National Education academic calendar.
- Holiday names in other languages are verified by hand before publication; unverified names are never published.
- Coverage: 247 countries; only countries whose holiday names are verified are published as pages.
Corrections from official sources
21 records missing or wrong in the open dataset were corrected against an official source:
| Country | Date | Holiday | Change | Official source |
|---|---|---|---|---|
| Russia | 2026-01-09 | Day off | added | Postanovlenie Pravitelstva RF 24.09.2025 N 1466 + TK RF md.112; https://www.consultant.ru/law/ref/calendar/proizvodstvennye/2026/ |
| Russia | 2026-03-09 | Day off | added | Postanovlenie Pravitelstva RF 24.09.2025 N 1466 + TK RF md.112; https://www.consultant.ru/law/ref/calendar/proizvodstvennye/2026/ |
| Russia | 2026-05-11 | Day off | added | Postanovlenie Pravitelstva RF 24.09.2025 N 1466 + TK RF md.112; https://www.consultant.ru/law/ref/calendar/proizvodstvennye/2026/ |
| Russia | 2026-12-31 | Day off | added | Postanovlenie Pravitelstva RF 24.09.2025 N 1466 + TK RF md.112; https://www.consultant.ru/law/ref/calendar/proizvodstvennye/2026/ |
| Russia | 2027-02-22 | Day off | added | Postanovlenie Pravitelstva RF 17.09.2026 N 1187; https://ppt.ru/news/proizvodstvennyy-kalendar/utverdili-grafik-vyhodnyh-i-prazdnichnyh-dney-na-2027-god |
| Russia | 2027-05-03 | Day off | added | Postanovlenie Pravitelstva RF 17.09.2026 N 1187; https://ppt.ru/news/proizvodstvennyy-kalendar/utverdili-grafik-vyhodnyh-i-prazdnichnyh-dney-na-2027-god |
| Russia | 2027-05-10 | Day off | added | Postanovlenie Pravitelstva RF 17.09.2026 N 1187; https://ppt.ru/news/proizvodstvennyy-kalendar/utverdili-grafik-vyhodnyh-i-prazdnichnyh-dney-na-2027-god |
| Russia | 2027-06-14 | Day off | added | Postanovlenie Pravitelstva RF 17.09.2026 N 1187; https://ppt.ru/news/proizvodstvennyy-kalendar/utverdili-grafik-vyhodnyh-i-prazdnichnyh-dney-na-2027-god |
| Russia | 2027-11-05 | Day off | added | Postanovlenie Pravitelstva RF 17.09.2026 N 1187; https://ppt.ru/news/proizvodstvennyy-kalendar/utverdili-grafik-vyhodnyh-i-prazdnichnyh-dney-na-2027-god |
| Russia | 2027-12-31 | Day off | added | Postanovlenie Pravitelstva RF 17.09.2026 N 1187; https://ppt.ru/news/proizvodstvennyy-kalendar/utverdili-grafik-vyhodnyh-i-prazdnichnyh-dney-na-2027-god |
| Russia | 2027-02-20 | Working day (transfer) | added | Postanovlenie Pravitelstva RF 17.09.2026 N 1187; https://ppt.ru/news/proizvodstvennyy-kalendar/utverdili-grafik-vyhodnyh-i-prazdnichnyh-dney-na-2027-god |
| Italy | 2026-11-01 | National Unity Day | type changed | Legge 54/1977 (festivita soppressa, Kasim'in ilk pazari kutlama); https://www.lexplain.it/festivita-del-4-novembre-in-busta-paga-quanto-spetta-in-piu/ |
| Italy | 2027-11-07 | National Unity Day | type changed | Legge 54/1977 (festivita soppressa, Kasim'in ilk pazari kutlama); https://www.lexplain.it/festivita-del-4-novembre-in-busta-paga-quanto-spetta-in-piu/ |
| United Arab Emirates | 2026-03-19 | Eid al-Fitr | added | https://nukta.com/uae-announces-march-19-start-for-eid-al-fitr-holidays |
| United Arab Emirates | 2026-06-16 | Islamic New Year | date changed | https://en.aletihad.ae/news/uae/4670030/uae-announces-hijri-new-year-holiday-on-june-15 |
| United Arab Emirates | 2026-08-25 | Prophet's Birthday | date changed | https://thenationalnews.com/news/uae/2026/08/07/uae-announces-public-and-private-sector-holiday-for-prophet-mohammeds-birthday |
| Saudi Arabia | 2026-03-23 | Eid al-Fitr Holiday | removed | HRSD duyurusu (ozel sektor, 4 gun, ise donus 22 Mart); https://al-ain.com/article/eid-alfitr-holiday-2026-saudi-arabia |
| Saudi Arabia | 2026-03-24 | Eid al-Fitr Holiday | removed | HRSD duyurusu (ozel sektor, 4 gun, ise donus 22 Mart); https://al-ain.com/article/eid-alfitr-holiday-2026-saudi-arabia |
| Saudi Arabia | 2026-05-31 | Eid al-Adha Holiday | removed | HRSD (26-29 Mayis); https://www.khaleejtimes.com/world/gulf/eid-al-adha-2026-holidays-announced-in-these-gulf-nations |
| Greece | 2027-05-01 | Labor Day | flagged | 1 Mayis 2027 Ortodoks Kutsal Cumartesi; 2021 emsali tatil 4 Mayis'a kaydirildi; 2027 karari henuz yok |
| Greece | 2027-05-04 | Labor Day | flagged | 1 Mayis 2027 Ortodoks Kutsal Cumartesi; 2021 emsali tatil 4 Mayis'a kaydirildi; 2027 karari henuz yok |
Weekend working days
Some countries declare a Saturday or Sunday an official working day to make up for bridge holidays. These days are counted as working days: Belarus, China, Hungary, Latvia, Myanmar (Burma), Uzbekistan.
Last data update: 2026-10-06. Methodology →