Recognised as Date
21 October 2004
- Thursday
- Q4
- Leap year
- Week 43
- Libra
21 October 2004 falls on a Thursday. It is day 295 of 366 in 2004, a leap year, falling in week 43 and quarter 4. Its Unix timestamp is 1,098,316,800.
Calendar position
Day of the weekThursday
Day of the month21st
Day of the year295 of 366
Days remaining in the year71
Days elapsed in the year294
ISO week numberWeek 43ISO 8601, weeks start on Monday
Week of the month3rd
Occurrence in the month3rd Thursday
QuarterQ4 2004
Year2004
Days in the month31
Leap yearYes, 366 days
This date in other formats
ISO 86012004-10-21
British (D/M/Y)21/10/2004
American (M/D/Y)10/21/2004
Long formThursday 21st October 2004
RFC 2822Thu, 21 Oct 2004 00:00:00 GMT
Compact20041021
In wordsthe 21st of October, two thousand and four
This date in other calendars
Hebrew6 Marheshvan 5765the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)7 Ramadan 1425 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)30 Mehr 1383the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die731,875days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp1,098,316,800seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)1,098,316,800,000
Relationship to the epoch12,712 days after the Unix epoch
Julian Day Number2,453,300midnight UTC
Days since 1 January 190038,279
Days since 1 January 20001,755
Moon phase
PhaseWaxing gibbousthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC57%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC7.4 dayssince the previous new moon
Previous new moon14 October 2004, 02:48 UTC
Next new moon12 November 2004, 14:27 UTC
Previous full moon28 September 2004, 13:09 UTC
Next full moon28 October 2004, 03:07 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.
Today18 September 2026
Days ago8,002 days
In other terms21 years, 331 days and 18 hours
Weeks1143.1 weeks ago
Anniversary this yearin 33 days
Years elapsed21 complete years
Seasons & signs
Zodiac signLibraAir sign
Chinese zodiac yearMonkeythe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Autumnmeteorological seasons, by whole months
Season (Southern Hemisphere)Spring
Easter Sunday that year11 April 2004
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