Recognised as Date
9 August 1013
- Monday
- Q3
- Common year
- Week 32
- Leo
9 August 1013 falls on a Monday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 221 of 365 in 1013, falling in week 32 and quarter 3. Its Unix timestamp is -30,180,988,800.
Calendar position
Day of the weekMondayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month9th
Day of the year221 of 365
Days remaining in the year144
Days elapsed in the year220
ISO week numberWeek 32ISO 8601, weeks start on Monday
Week of the month2nd
Occurrence in the month2nd Monday
QuarterQ3 1013
Year1013
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86011013-08-09
British (D/M/Y)09/08/1013
American (M/D/Y)08/09/1013
Long formMonday 9th August 1013
RFC 2822Mon, 09 Aug 1013 00:00:00 GMT
Compact10130809
In wordsthe 9th of August, one thousand and thirteen
Julian calendar equivalent3 August 1013the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew24 Av 4773the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)22 Muharram 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)18 Mordad 392the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die369,846days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-30,180,988,800seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-30,180,988,800,000
Relationship to the epoch349,317 days before the Unix epoch
Julian Day Number2,091,271midnight UTC
Days since 1 January 1900-323,750
Days since 1 January 2000-360,274
Moon phase
PhaseWaning crescentthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC31%≈to about 1%, by Meeus
Waxing or waningWaning
Moon age at 12:00 UTC23.5 dayssince the previous new moon
Previous new moon17 July 1013
Next new moon15 August 1013
Previous full moon31 July 1013
Next full moon29 August 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.
Today18 September 2026
Days ago370,031 days
In other terms1,013 years, 32 days and 18 hours
Weeks52861.6 weeks ago
Anniversary this year40 days ago
Years elapsed1,013 complete years
Seasons & signs
Zodiac signLeoFire sign
Chinese zodiac yearOxthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Summermeteorological seasons, by whole months
Season (Southern Hemisphere)Winter
Easter Sunday that year11 April 1013
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