List of future calendar events

This list assumes that these calendars continue to be used in their current form without further adjustments.

Years from now Gregorian
date		 Event
52 2077 Beginning of the 16th century in the Islamic calendar.
75 2100, March 1 First century non-leap year since 1900.
75 2100, March 14 On March 14 (which will be February 29 in the Julian calendar), the difference between the Julian calendar and the Gregorian calendar reaches 14 days. Since 14 is divisible by 7, this will be the first time in history since its inception that the Gregorian calendar has the same day of the week for each day of the year as the Julian calendar. This will last until February 28, 2200 of the Gregorian Calendar.
189 2214 Rosh Hashanah will fall on October 6 for the first time.
214 2239 September 29 The Year 6000 begins in the Hebrew calendar.
235 2260 Rosh Hashanah will fall on September 6 for the last time in over 10,000 years.
260 2285 Unless changes are made in the religious calendar, the Western Easter will fall on March 22 for the first time since 1818, the earliest possible date on which Easter can occur.
775 2800, March 1 The Revised Julian and Gregorian calendars will differ by a day.
≈2750 4772 October 13 The Mesoamerican Long Count calendar, assuming a turnover value of 20 b'ak'tuns, will require a sixth order.
2,884 4909 The Gregorian calendar will be a full day ahead of the solar year.
3,984 6009 The first Strobogrammatic numbered year since 1961.
10,000 12025 The Gregorian calendar will have drifted by about 10 days in relation to the seasons.
10,867 June 10, AD 12,892 In the Hebrew calendar, due to a gradual drift in relation to the solar year, Passover will fall on the northern summer solstice (it has historically fallen around the spring equinox).
18,849 AD 20,874 The lunar Islamic calendar and the solar Gregorian calendar will share the same year number. After this, the shorter Islamic calendar will slowly overtake the Gregorian.
25,000 27025 The Tabular Islamic calendar will be roughly 10 days out of sync with the Moon's phases.
46,876 March 1, AD 48,901 The Julian calendar (365.25 days) and Gregorian calendar (365.2425 days) will be one year apart.
The Julian day number (a measure used by astronomers) at Greenwich mean midnight (start of day) is 19 581 842.5 for both dates.
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