Recognised as Date
21 October 2001
- Sunday
- Q4
- Common year
- Week 42
- Libra
21 October 2001 falls on a Sunday. It is day 294 of 365 in 2001, falling in week 42 and quarter 4. Its Unix timestamp is 1,003,622,400.
Calendar position
Day of the weekSunday
Day of the month21st
Day of the year294 of 365
Days remaining in the year71
Days elapsed in the year293
ISO week numberWeek 42ISO 8601, weeks start on Monday
Week of the month3rd
Occurrence in the month3rd Sunday
QuarterQ4 2001
Year2001
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86012001-10-21
British (D/M/Y)21/10/2001
American (M/D/Y)10/21/2001
Long formSunday 21st October 2001
RFC 2822Sun, 21 Oct 2001 00:00:00 GMT
Compact20011021
In wordsthe 21st of October, two thousand and one
This date in other calendars
Hebrew4 Marheshvan 5762the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)3 Shaban 1422 AHthe tabular reckoning; the calendar in religious use begins each month on an actual crescent sighting, so expect a day either way
Persian (arithmetic)29 Mehr 1380the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die730,779days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp1,003,622,400seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)1,003,622,400,000
Relationship to the epoch11,616 days after the Unix epoch
Julian Day Number2,452,204midnight UTC
Days since 1 January 190037,183
Days since 1 January 2000659
Moon phase
PhaseWaxing crescentthe same phase everywhere on Earth at the same instant
Illuminated at 12:00 UTC25%≈to about 1%, by Meeus
Waxing or waningWaxing
Moon age at 12:00 UTC4.7 dayssince the previous new moon
Previous new moon16 October 2001, 19:23 UTC
Next new moon15 November 2001, 06:40 UTC
Previous full moon2 October 2001, 13:49 UTC
Next full moon1 November 2001, 05:41 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.
Today19 September 2026
Days ago9,099 days
In other terms24 years and 333 days
Weeks1299.9 weeks ago
Anniversary this yearin 32 days
Years elapsed24 complete years
Seasons & signs
Zodiac signLibraAir sign
Chinese zodiac yearSnakethe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Autumnmeteorological seasons, by whole months
Season (Southern Hemisphere)Spring
Easter Sunday that year15 April 2001
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