Gregorian calendar
Internationally accepted civil calendar
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We include updates on Old Style and New Style dates, Common Era, Sabbath in Christianity, Doomsday rule, Zeller's congruence, Common year starting on Friday, Common year starting on Monday, Determination of the day of the week, Common year starting on Thursday, Inter gravissimas, Common year starting on Wednesday, Leap year starting on Thursday, Century leap year, Dominical letter, Ole Rømer, Common year starting on Sunday ... and more.
| May 5 2025 |
Japanese calendar
Children's Day, a national holiday celebrating children's happiness, health, and individuality.
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| May 4 2025 |
Japanese calendar
Greenery Day, a holiday dedicated to appreciating nature and the environment.
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| May 3 2025 |
Japanese calendar
Constitution Memorial Day, commemorating the promulgation of the post-World War II Japanese Constitution in 1947.
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| May 2 2025 |
Japanese calendar
88 nights since Risshun, a traditional marker in the Japanese agricultural calendar.
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| April 29 2025 |
Japanese calendar
Shōwa Day, honoring the birthday of Emperor Shōwa (Hirohito) and commemorating the Shōwa era.
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| March 20 2025 |
Japanese calendar
Vernal Equinox Day, marking the astronomical start of spring in Japan.
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| March 2025 |
Japanese calendar
Seven-day period surrounding Shunbun (spring equinox), a significant time in the Japanese seasonal calendar.
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| March 16 2025 |
Doomsday rule
The current year for which the Doomsday rule is being demonstrated, highlighting the ongoing utility of this calendar calculation method.
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| February 23 2025 |
Japanese calendar
The Emperor's Birthday, a national holiday celebrating the current Emperor of Japan.
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| February 11 2025 |
Japanese calendar
National Foundation Day commemorating the founding of Japan and the ascension of Emperor Jimmu.
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| February 3 2025 |
Japanese calendar
Eve of Risshun (beginning of spring) according to one definition in the Japanese calendar.
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| January 1 2025 |
Japanese calendar
Japanese New Year's Day, a national holiday celebrating the start of the new year.
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| January 1 2025 |
Juche calendar
Official calendars were released without Juche year notation, marking the first time in decades that Juche years were not displayed, replacing what would have been Juche 114 with 2025.
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| 2024 |
Determination of the day of the week
A leap year starting on Monday, corresponding to the 1996 calendar year. The first two months correspond to the first two months of 2018, and the last ten months correspond to the last ten months of 2019.
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| 2024 |
Juche calendar
End of the noted period of widespread use of the Juche calendar as a tourist souvenir.
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| December 13 2024 |
Leap year starting on Monday
Second Friday the 13th in the 2024 leap year starting on Monday.
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| October 13 2024 |
Juche calendar
Rodong Sinmun (North Korean newspaper) stopped using the Juche calendar, switching to exclusively using the Gregorian calendar.
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| September 13 2024 |
Leap year starting on Monday
First Friday the 13th in the 2024 leap year starting on Monday.
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| January 1 2024 |
Leap year starting on Monday
Most recent leap year starting on Monday in the Gregorian calendar, beginning on Monday, 1 January.
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| 2023 |
Japanese calendar
Imperial family's New Year's greetings held publicly for the first time in three years. Emperor's Birthday celebrations to be publicly held for the first time since Naruhito's ascension.
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| 2023 |
Determination of the day of the week
A common year starting on Sunday, corresponding to the 2017 calendar year.
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| September 1 2023 |
Adoption of the Gregorian calendar
The Ukrainian Greek Catholic Church switched to the Gregorian calendar. The Orthodox Church of Ukraine opted for the Revised Julian calendar. The Ukrainian Orthodox Church (Moscow Patriarchate) declared it would continue celebrating using the Julian calendar.
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| 2022 |
Japanese calendar
Continued televised New Year's greetings due to COVID-19 crisis.
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| 2022 |
Adoption of the Gregorian calendar
Following the Russian invasion, most Christian denominations using the old Julian calendar announced plans to transition to either the Gregorian or Revised Julian calendar. The All-Ukrainian Union of Churches of Evangelical Christian Baptists and the Church of Christians of the Evangelical Faith of Ukraine (Pentecostals) switched to the Gregorian calendar.
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| 2022 |
Determination of the day of the week
A common year starting on Saturday, corresponding to the 2011 calendar year. The last ten months correspond to the last ten months of 2016.
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| 2022 |
Juche calendar
The Gregorian calendar was used alongside the Juche calendar until this year.
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| January 1 2022 |
Common year starting on Friday
A common year starting on Friday in the obsolete Julian calendar.
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| 2021 |
Japanese calendar
Naruhito's New Year's greetings delivered via televised speech due to COVID-19 crisis.
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| 2021 |
Determination of the day of the week
A common year starting on Friday, corresponding to the 2010 calendar year. The first two months correspond to the first two months of 2016.
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| January 1 2021 |
Common year starting on Friday
Most recent common year starting on Friday in the Gregorian calendar begins.
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| 2020 |
Japanese calendar
Naruhito gave his first New Year's speech since 2017, when Akihito halted the practice to reduce his workload.
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| 2020 |
Determination of the day of the week
Last occurrence of a leap year starting on Wednesday.
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| January 1 2020 |
Leap year starting on Wednesday
The most recent leap year starting on Wednesday, beginning on Wednesday 1 January with two Friday the 13ths occurring in March and November.
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| May 1 2019 |
Japanese calendar
The Reiwa era formally began with Emperor Naruhito's accession to the throne, marking a significant transition in the Japanese imperial era naming system.
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| April 30 2019 |
Japanese calendar
The Heisei era ended as Emperor Akihito abdicated the throne.
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| April 1 2019 |
Japanese calendar
The Japanese government announced the name of the new era, Reiwa, one month before the emperor's accession to the throne.
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| 2018 |
Common year starting on Monday
The most recent common year that started on Monday in the Gregorian calendar.
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| 2018 |
Adoption of the Gregorian calendar
The Ukrainian Lutheran Church transitioned to the Revised Julian calendar.
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| 2017 |
Common year starting on Monday
Year 10 of the Julian calendar cycle where common years can start on Monday.
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| 2014 |
Japanese calendar
Mountain Day established as a new holiday, to be observed starting 2016.
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| 2011 |
Juche calendar
Kim Jong Il's death in Juche year 100.
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This contents of the box above is based on material from the Wikipedia articles Common year starting on Friday, Leap year starting on Monday, Common year starting on Monday, Doomsday rule, Juche calendar, Determination of the day of the week, Fasli calendar, Adoption of the Gregorian calendar, Japanese calendar & Leap year starting on Wednesday, which are released under the Creative Commons Attribution-ShareAlike 4.0 International License.