Recognised as Date
23 June 1064
- Thursday
- Q2
- Leap year
- Week 25
- Cancer
23 June 1064 falls on a Thursday in the proleptic Gregorian calendar, which did not yet exist at the time. It is day 175 of 366 in 1064, a leap year, falling in week 25 and quarter 2. Its Unix timestamp is -28,575,590,400. A new moon falls on this day.
Calendar position
Day of the weekThursdayproleptic Gregorian; contemporaries used the Julian calendar and would have named a different day
Day of the month23rd
Day of the year175 of 366
Days remaining in the year191
Days elapsed in the year174
ISO week numberWeek 25ISO 8601, weeks start on Monday
Week of the month4th
Occurrence in the month4th Thursday
MonthJune (month 6 of 12)
QuarterQ2 1064
Year1064
Days in the month30
Leap yearYes, 366 days
This date in other formats
ISO 86011064-06-23
British (D/M/Y)23/06/1064
American (M/D/Y)06/23/1064
Long formThursday 23rd June 1064
RFC 2822Thu, 23 Jun 1064 00:00:00 GMT
Compact10640623
In wordsthe 23rd of June, one thousand and sixty-four
Julian calendar equivalent17 June 1064the date contemporaries would have written, before the Gregorian calendar existed
This date in other calendars
Hebrew30 Sivan 4824the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)28 Jumada II 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)2 Tir 443the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die388,427days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp-28,575,590,400seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)-28,575,590,400,000
Relationship to the epoch330,736 days before the Unix epoch
Julian Day Number2,109,852midnight UTC
Days since 1 January 1900-305,169
Days since 1 January 2000-341,693
Moon phase
PhaseNew 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 UTC0%≈to about 1%, by Meeus
Waxing or waningWaning
Moon age at 12:00 UTC29.4 dayssince the previous new moon
This new moon23 June 1064
Next new moon22 July 1064
Previous full moon8 June 1064
Next full moon7 July 1064
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 ago351,450 days
In other terms962 years, 79 days and 12 hours
Weeks50207.1 weeks ago
Anniversary this year87 days ago
Years elapsed962 complete years
Seasons & signs
Zodiac signCancerWater 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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