October 2021 Calendar
Holidays & observances in October 2021
- Mon, Oct 11Columbus DayFederal holiday
- Sun, Oct 31HalloweenObservance
Moon phases
- New moon Wed, Oct 6
- First quarter Thu, Oct 14
- Full moon Thu, Oct 21
- Last quarter Thu, Oct 28
About October 2021
- Days31
- Starts onFriday
- Ends onSunday
- ISO weeks39–43
- Weekdays (Mon–Fri)21
- Working days after federal holidays20
This printable October 2021 calendar marks Columbus Day, shows moon phases and includes a notes area. Use the options to start the week on Sunday or Monday, add ISO week numbers, or switch to the planner template with a to-do column.