Recognised as Date
12 April 1254
- Sunday
- Q2
- Common year
- Week 15
- Aries
12 April 1254 falls on a Sunday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 102 of 365 in 1254, falling in week 15 and quarter 2. Its Unix timestamp is -22,585,996,800.
Calendar position
Day of the weekSundayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month12th
Day of the year102 of 365
Days remaining in the year263
Days elapsed in the year101
ISO week numberWeek 15ISO 8601, weeks start on Monday
Week of the month2nd
Occurrence in the month2nd Sunday
QuarterQ2 1254
Year1254
Days in the month30
Leap yearNo, 365 days
This date in other formats
ISO 86011254-04-12
British (D/M/Y)12/04/1254
American (M/D/Y)04/12/1254
Long formSunday 12th April 1254
RFC 2822Sun, 12 Apr 1254 00:00:00 GMT
Compact12540412
In wordsthe 12th of April, one thousand, two hundred and fifty-four
Julian calendar equivalent5 April 1254the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew16 Nisan 5014the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)14 Safar 652 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)23 Farvardin 633the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die457,751days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-22,585,996,800seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-22,585,996,800,000
Relationship to the epoch261,412 days before the Unix epoch
Julian Day Number2,179,176midnight UTC
Days since 1 January 1900-235,845
Days since 1 January 2000-272,369
Moon phase
PhaseWaning gibbousthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC99%≈to about 1%, by Meeus
Waxing or waningWaning
Moon age at 12:00 UTC16.1 dayssince the previous new moon
Previous new moon27 March 1254
Next new moon25 April 1254
Previous full moon11 April 1254
Next full moon11 May 1254
PrecisionDates onlybefore 1700 or after 2150 the Earth's rotation is not known well enough to give a time, and a phase near midnight can land a day either side
Relative to today
These values depend on today’s date and change daily.
Today19 September 2026
Days ago282,127 days
In other terms772 years and 154 days
Weeks40303.9 weeks ago
Anniversary this year160 days ago
Years elapsed772 complete years
Seasons & signs
Zodiac signAriesFire sign
Chinese zodiac yearTigerthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Springmeteorological seasons, by whole months
Season (Southern Hemisphere)Autumn
Easter Sunday that year12 April 1254
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