Recognised as Date
21 January 2016
- Thursday
- Q1
- Leap year
- Week 3
- Aquarius
21 January 2016 was a Thursday. It was day 21 of 366 in 2016, a leap year, falling in week 3 and quarter 1. Its Unix timestamp is 1,453,334,400.
Calendar position
Day of the weekThursday
Day of the month21st
Day of the year21 of 366
Days remaining in the year345
Days elapsed in the year20
ISO week numberWeek 3ISO 8601, weeks start on Monday
Week of the month3rd
Occurrence in the month3rd Thursday
QuarterQ1 2016
Year2016
Days in the month31
Leap yearYes, 366 days
This date in other formats
ISO 86012016-01-21
British (D/M/Y)21/01/2016
American (M/D/Y)01/21/2016
Long formThursday 21st January 2016
RFC 2822Thu, 21 Jan 2016 00:00:00 GMT
Compact20160121
In wordsthe 21st of January, two thousand and sixteen
This date in other calendars
Hebrew11 Shevat 5776the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)10 Rabi II 1437 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 Bahman 1394the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die735,984days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp1,453,334,400seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)1,453,334,400,000
Relationship to the epoch16,821 days after the Unix epoch
Julian Day Number2,457,409midnight UTC
Days since 1 January 190042,388
Days since 1 January 20005,864
Relative to today
These values depend on today’s date and change daily.
Today13 September 2026
Days ago3,888 days
In other terms10 years, 235 days and 12 hours
Weeks555.4 weeks ago
Anniversary this year235 days ago
Years elapsed10 complete years
Seasons & signs
Zodiac signAquariusAir sign
Chinese zodiac yearMonkeythe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Wintermeteorological seasons, by whole months
Season (Southern Hemisphere)Summer
Easter Sunday that year27 March 2016
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