Recognised as Date
1 October 1216
- Saturday
- Q4
- Leap year
- Week 39
- Libra
1 October 1216 falls on a Saturday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 275 of 366 in 1216, a leap year, falling in week 39 and quarter 4. Its Unix timestamp is -23,770,281,600.
Calendar position
Day of the weekSaturdayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month1st
Day of the year275 of 366
Days remaining in the year91
Days elapsed in the year274
ISO week numberWeek 39ISO 8601, weeks start on Monday
Week of the month1st
Occurrence in the month1st Saturday
QuarterQ4 1216
Year1216
Days in the month31
Leap yearYes, 366 days
This date in other formats
ISO 86011216-10-01
British (D/M/Y)01/10/1216
American (M/D/Y)10/01/1216
Long formSaturday 1st October 1216
RFC 2822Sat, 01 Oct 1216 00:00:00 GMT
Compact12161001
In wordsthe 1st of October, one thousand, two hundred and sixteen
Julian calendar equivalent24 September 1216the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew10 Tishri 4977the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)10 Jumada II 613 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 Mehr 595the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die444,044days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-23,770,281,600seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-23,770,281,600,000
Relationship to the epoch275,119 days before the Unix epoch
Julian Day Number2,165,469midnight UTC
Days since 1 January 1900-249,552
Days since 1 January 2000-286,076
Moon phase
PhaseWaxing gibbousthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC91%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC11 dayssince the previous new moon
Previous new moon20 September 1216
Next new moon19 October 1216
Previous full moon4 September 1216
Next full moon4 October 1216
Lit side, Northern HemisphereRight
Lit side, Southern HemisphereLeftthe 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.
Today18 September 2026
Days ago295,833 days
In other terms809 years, 345 days and 18 hours
Weeks42261.9 weeks ago
Anniversary this yearin 13 days
Years elapsed809 complete years
Seasons & signs
Zodiac signLibraAir sign
Chinese zodiac yearRatthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Autumnmeteorological seasons, by whole months
Season (Southern Hemisphere)Spring
Easter Sunday that year17 April 1216
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