Recognised as Date
31 October 1013
- Sunday
- Q4
- Common year
- Week 43
- Scorpio
31 October 1013 falls on a Sunday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 304 of 365 in 1013, falling in week 43 and quarter 4. Its Unix timestamp is -30,173,817,600.
Calendar position
Day of the weekSundayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month31st
Day of the year304 of 365
Days remaining in the year61
Days elapsed in the year303
ISO week numberWeek 43ISO 8601, weeks start on Monday
Week of the month5th
Occurrence in the month5th Sunday, and the last of the month
QuarterQ4 1013
Year1013
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011013-10-31
British (D/M/Y)31/10/1013
American (M/D/Y)10/31/1013
Long formSunday 31st October 1013
RFC 2822Sun, 31 Oct 1013 00:00:00 GMT
Compact10131031
In wordsthe 31st of October, one thousand and thirteen
Julian calendar equivalent25 October 1013the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew18 Marheshvan 4774the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)16 Rabi II 404 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)9 Aban 392the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die369,929days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-30,173,817,600seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-30,173,817,600,000
Relationship to the epoch349,234 days before the Unix epoch
Julian Day Number2,091,354midnight UTC
Days since 1 January 1900-323,667
Days since 1 January 2000-360,191
Moon phase
PhaseWaning gibbousthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC87%≈to about 1%, by Meeus
Waxing or waningWaning
Moon age at 12:00 UTC17.8 dayssince the previous new moon
Previous new moon13 October 1013
Next new moon12 November 1013
Previous full moon27 October 1013
Next full moon26 November 1013
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.
Today20 September 2026
Days ago369,950 days
In other terms1,012 years and 317 days
Weeks52850.0 weeks ago
Anniversary this yearin 41 days
Years elapsed1,012 complete years
Seasons & signs
Zodiac signScorpioWater sign
Chinese zodiac yearOxthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Autumnmeteorological seasons, by whole months
Season (Southern Hemisphere)Spring
Easter Sunday that year11 April 1013
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