Recognised as Date
18 January 2001
- Thursday
- Q1
- Common year
- Week 3
- Capricorn
18 January 2001 was a Thursday. It was day 18 of 365 in 2001, falling in week 3 and quarter 1. Its Unix timestamp is 979,776,000.
Calendar position
Day of the weekThursday
Day of the month18th
Day of the year18 of 365
Days remaining in the year347
Days elapsed in the year17
ISO week numberWeek 3ISO 8601, weeks start on Monday
Week of the month3rd
Occurrence in the month3rd Thursday
QuarterQ1 2001
Year2001
Days in the month31
Leap yearNo, 365 days
This date in other formats
ISO 86012001-01-18
British (D/M/Y)18/01/2001
American (M/D/Y)01/18/2001
Long formThursday 18th January 2001
RFC 2822Thu, 18 Jan 2001 00:00:00 GMT
Compact20010118
In wordsthe 18th of January, two thousand and one
This date in other calendars
Hebrew23 Tevet 5761the Hebrew calendar has been fully algorithmic since the ninth century, so this is exact
Islamic (tabular)22 Shawwal 1421 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 Dey 1379the arithmetic (Birashk) calendar; the official Solar Hijri calendar takes its new year from the astronomical equinox at Tehran
Rata Die730,503days since 1 January 1 CE in the proleptic Gregorian calendar, the pivot every conversion here runs through
Unix time & day counts
Unix timestamp979,776,000seconds since 1 January 1970, midnight UTC
Unix timestamp (ms)979,776,000,000
Relationship to the epoch11,340 days after the Unix epoch
Julian Day Number2,451,928midnight UTC
Days since 1 January 190036,907
Days since 1 January 2000383
Relative to today
These values depend on today’s date and change daily.
Today13 September 2026
Days ago9,369 days
In other terms25 years, 237 days and 18 hours
Weeks1338.4 weeks ago
Anniversary this year238 days ago
Years elapsed25 complete years
Seasons & signs
Zodiac signCapricornEarth sign
Chinese zodiac yearSnakethe animal changes at Chinese New Year, not 1 January
Season (Northern Hemisphere)Wintermeteorological seasons, by whole months
Season (Southern Hemisphere)Summer
Easter Sunday that year15 April 2001
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