Recognised as Date
23 December 2012
- Sunday
- Q4
- Leap year
- Week 51
- Capricorn
23 December 2012 falls on a Sunday. It is day 358 of 366 in 2012, a leap year, falling in week 51 and quarter 4. Its Unix timestamp is 1,356,220,800.
Calendar position
Day of the weekSunday
Day of the month23rd
Day of the year358 of 366
Days remaining in the year8
Days elapsed in the year357
ISO week numberWeek 51ISO 8601, weeks start on Monday
Week of the month4th
Occurrence in the month4th Sunday
QuarterQ4 2012
Year2012
Days in the month31
Leap yearYes, 366 days
This date in other formats
ISO 86012012-12-23
British (D/M/Y)23/12/2012
American (M/D/Y)12/23/2012
Long formSunday 23rd December 2012
RFC 2822Sun, 23 Dec 2012 00:00:00 GMT
Compact20121223
In wordsthe 23rd of December, two thousand and twelve
This date in other calendars
Hebrew10 Tevet 5773the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)9 Safar 1434 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)3 Dey 1391the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die734,860days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp1,356,220,800seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)1,356,220,800,000
Relationship to the epoch15,697 days after the Unix epoch
Julian Day Number2,456,285midnight UTC
Days since 1 January 190041,264
Days since 1 January 20004,740
Moon phase
PhaseWaxing gibbousthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC80%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC10.1 dayssince the previous new moon
Previous new moon13 December 2012, 08:42 UTC
Next new moon11 January 2013, 19:44 UTC
Previous full moon28 November 2012, 14:46 UTC
Next full moon28 December 2012, 10:21 UTC
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
Relative to today
These values depend on today’s date and change daily.
Today20 September 2026
Days ago5,019 days
In other terms13 years, 270 days and 18 hours
Weeks717.0 weeks ago
Anniversary this yearin 94 days
Years elapsed13 complete years
Seasons & signs
Zodiac signCapricornEarth sign
Chinese zodiac yearDragonthe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Wintermeteorological seasons, by whole months
Season (Southern Hemisphere)Summer
Easter Sunday that year8 April 2012
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Adjacent days
The same day in other years
Nerdulate something else
Nothing in mind? Surprise me · today’s page