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October 2027

31 daysStarts Friday, ends Sunday20 working days10 weekend daysISO weeks 39–43

Calendar grid for 10/2027, weeks starting Sun
ISO week
39
40
41
42
43
44

Holidays in October

  • Columbus DayMon, Oct 11 · Federal
  • HalloweenSun, Oct 31 · Federal

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

Moon phases

  • First QuarterThu, Oct 7, 7:47 AM
  • Full MoonFri, Oct 15, 9:46 AM
  • Last QuarterFri, Oct 22, 1:29 PM
  • New MoonFri, Oct 29, 9:36 AM

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

The moon through October

  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 October 2027

October 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, 1 is a federal holiday, leaving 20 working days.

Columbus Day falls on Monday, October 11, 2027. Halloween falls on Sunday, October 31, 2027.

The month runs from Friday, October 1, 2027 to Sunday, October 31, 2027, spanning ISO weeks 39 to 43.

Calendar with holidaysPrintable versionDownload PDFFull year 2027