Recognised as Date
13 January 1054
- Friday
- Q1
- Common year
- Week 2
- Capricorn
13 January 1054 falls on a Friday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 13 of 365 in 1054, falling in week 2 and quarter 1. Its Unix timestamp is -28,905,120,000.
Calendar position
Day of the weekFridayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month13th
Day of the year13 of 365
Days remaining in the year352
Days elapsed in the year12
ISO week numberWeek 2ISO 8601, weeks start on Monday
Week of the month2nd
Occurrence in the month2nd Friday
QuarterQ1 1054
Year1054
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011054-01-13
British (D/M/Y)13/01/1054
American (M/D/Y)01/13/1054
Long formFriday 13th January 1054
RFC 2822Fri, 13 Jan 1054 00:00:00 GMT
Compact10540113
In wordsthe 13th of January, one thousand and fifty-four
Julian calendar equivalent7 January 1054the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew25 Tevet 4814the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)24 Ramadan 445 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 Dey 432the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die384,613days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-28,905,120,000seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-28,905,120,000,000
Relationship to the epoch334,550 days before the Unix epoch
Julian Day Number2,106,038midnight UTC
Days since 1 January 1900-308,983
Days since 1 January 2000-345,507
Moon phase
PhaseWaning crescentthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC16%≈to about 1%, by Meeus
Waxing or waningWaning
Moon age at 12:00 UTC25.5 dayssince the previous new moon
Previous new moon19 December 1053
Next new moon17 January 1054
Previous full moon3 January 1054
Next full moon1 February 1054
Lit side, Northern HemisphereLeft
Lit side, Southern HemisphereRightthe same Moon seen from the other side of the equator; near the equator the lit side points up or down rather than to one side
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.
Today25 October 2026
Days ago355,301 days
In other terms972 years and 278 days
Weeks50757.3 weeks ago
Anniversary this year285 days ago
Years elapsed972 complete years
Seasons & signs
Zodiac signCapricornEarth sign
Chinese zodiac yearHorsethe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Wintermeteorological seasons, by whole months
Season (Southern Hemisphere)Summer
Easter Sunday that year2 April 1054
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