September 2023 Calendar
Holidays & observances in September 2023
- Mon, Sep 4Labor DayFederal holiday
Moon phases
- Last quarter Fri, Sep 8
- New moon Fri, Sep 15
- First quarter Fri, Sep 22
- Full moon Sat, Sep 30
About September 2023
- Days30
- Starts onFriday
- Ends onSaturday
- ISO weeks35–39
- Weekdays (Mon–Fri)21
- Working days after federal holidays20
This printable September 2023 calendar marks Labor 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.