Recognised as Date
9 September 1088
- Sunday
- Q3
- Leap year
- Week 36
- Virgo
9 September 1088 falls on a Sunday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 253 of 366 in 1088, a leap year, falling in week 36 and quarter 3. Its Unix timestamp is -27,811,468,800. A full moon falls on this day.
Calendar position
Day of the weekSundayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month9th
Day of the year253 of 366
Days remaining in the year113
Days elapsed in the year252
ISO week numberWeek 36ISO 8601, weeks start on Monday
Week of the month2nd
Occurrence in the month2nd Sunday
QuarterQ3 1088
Year1088
Days in the month30
Leap yearYes, 366 days
This date in other formats
ISO 86011088-09-09
British (D/M/Y)09/09/1088
American (M/D/Y)09/09/1088
Long formSunday 9th September 1088
RFC 2822Sun, 09 Sep 1088 00:00:00 GMT
Compact10880909
In wordsthe 9th of September, one thousand and eighty-eight
Julian calendar equivalent3 September 1088the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew14 Elul 4848the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)13 Jumada II 481 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)18 Shahrivar 467the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die397,271days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-27,811,468,800seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-27,811,468,800,000
Relationship to the epoch321,892 days before the Unix epoch
Julian Day Number2,118,696midnight UTC
Days since 1 January 1900-296,325
Days since 1 January 2000-332,849
Moon phase
PhaseFull moonthe instant falls on this UTC day; in time zones far enough east or west the local date is a day either side
Illuminated at 12:00 UTC100%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC15.2 dayssince the previous new moon
Previous new moon25 August 1088
Next new moon23 September 1088
This full moon9 September 1088
Next full moon9 October 1088
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 ago342,607 days
In other terms938 years, 2 days and 12 hours
Weeks48943.9 weeks ago
Anniversary this year10 days ago
Years elapsed938 complete years
Seasons & signs
Zodiac signVirgoEarth sign
Chinese zodiac yearDragonthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Autumnmeteorological seasons, by whole months
Season (Southern Hemisphere)Spring
Easter Sunday that year22 April 1088
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