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DateAlmanac

January 2031

  • 31 days
  • Starts Wednesday
  • Ends Friday
  • 21 working days
  • 8 weekend days
  • ISO weeks 1–5
Calendar grid for 1/2031, weeks starting Sun
ISO week number, Monday to Sunday
1
2
3
4
5

Holiday or observanceWeekend

Holidays in January

  • New Year's DayJan 1
  • Birthday of Martin Luther King, Jr.Jan 20

Federal holidays from 5 U.S.C. §6103, plus widely kept US observances. 4 religious dates fall in January 2031 as well — see the calendar with every holiday.

Moon phases

  • Full moon

    Wed, Jan 8

    1:25 PM ET

  • Last quarter

    Thu, Jan 16

    7:47 AM ET

  • New moon

    Wed, Jan 22

    11:30 PM ET

  • First quarter

    Thu, Jan 30

    2:43 AM ET

Times in US Eastern. Computed from Meeus, Astronomical Algorithms, ch. 49.

The moon through January

  1. 1
  2. 3
  3. 5
  4. 7
  5. 9
  6. 11
  7. 13
  8. 15
  9. 17
  10. 19
  11. 21
  12. 23
  13. 25
  14. 27
  15. 29
  16. 31
The moon every other evening, drawn at its true illumination. The terminator is a semi-ellipse, not a straight edge — it only looks straight at the quarters.

About January 2031

January 2031 has 31 days. It begins on a Wednesday and ends on a Friday, which gives the month five Wednesdays, Thursdays and Fridays — and only four of every other weekday. Of its 23 weekdays, 2 are federal holidays, leaving 21 working days.

2031 at a glance

Calendar with holidaysPrintable versionDownload PDFFull year 2031