Skip to content
DateAlmanac

January 2027

  • 31 days
  • Starts Friday
  • Ends Sunday
  • 19 working days
  • 10 weekend days
  • ISO weeks 53–4
Calendar grid for 1/2027, weeks starting Sun
ISO week number, Monday to Sunday
53
1
2
3
4
5

Holiday or observanceWeekend

Holidays in January

  • New Year's DayJan 1
  • Birthday of Martin Luther King, Jr.Jan 18

Federal holidays from 5 U.S.C. §6103, plus widely kept US observances. 4 religious dates fall in January 2027 as well — see the calendar with every holiday.

Moon phases

  • New moon

    Thu, Jan 7

    3:24 PM ET

  • First quarter

    Fri, Jan 15

    3:34 PM ET

  • Full moon

    Fri, Jan 22

    7:17 AM ET

  • Last quarter

    Fri, Jan 29

    5:55 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 2027

January 2027 has 31 days. It begins on a Friday and ends on a Sunday, which gives the month five Fridays, Saturdays and Sundays — and only four of every other weekday. Of its 21 weekdays, 2 are federal holidays, leaving 19 working days.

Because 1 January falls on a Friday, the first days of the month still belong to ISO week 53 of 2026; ISO week 1 of 2027 does not begin until the first Monday.

2027 at a glance

Calendar with holidaysPrintable versionDownload PDFFull year 2027