Recognised as Date
23 August 1064
- Tuesday
- Q3
- Leap year
- Week 34
- Virgo
23 August 1064 falls on a Tuesday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 236 of 366 in 1064, a leap year, falling in week 34 and quarter 3. Its Unix timestamp is -28,570,320,000.
Calendar position
Day of the weekTuesdayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month23rd
Day of the year236 of 366
Days remaining in the year130
Days elapsed in the year235
ISO week numberWeek 34ISO 8601, weeks start on Monday
Week of the month4th
Occurrence in the month4th Tuesday
QuarterQ3 1064
Year1064
Days in the month31
Leap yearYes, 366 days
This date in other formats
ISO 86011064-08-23
British (D/M/Y)23/08/1064
American (M/D/Y)08/23/1064
Long formTuesday 23rd August 1064
RFC 2822Tue, 23 Aug 1064 00:00:00 GMT
Compact10640823
In wordsthe 23rd of August, one thousand and sixty-four
Julian calendar equivalent17 August 1064the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew2 Elul 4824the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)1 Ramadan 456 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)1 Shahrivar 443the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die388,488days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-28,570,320,000seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-28,570,320,000,000
Relationship to the epoch330,675 days before the Unix epoch
Julian Day Number2,109,913midnight UTC
Days since 1 January 1900-305,108
Days since 1 January 2000-341,632
Moon phase
PhaseWaxing crescentthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC7%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC2.2 dayssince the previous new moon
Previous new moon21 August 1064
Next new moon19 September 1064
Previous full moon5 August 1064
Next full moon4 September 1064
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.
Today20 September 2026
Days ago351,391 days
In other terms962 years, 20 days and 12 hours
Weeks50198.7 weeks ago
Anniversary this year28 days ago
Years elapsed962 complete years
Seasons & signs
Zodiac signVirgoEarth sign
Chinese zodiac yearDragonthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Summermeteorological seasons, by whole months
Season (Southern Hemisphere)Winter
Easter Sunday that year17 April 1064
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