September 2025 Calendar Printable | Stay organized and plan ahead with our FREE Printable September 2025 Calendar, beautifully designed in the modern Montserrat font and formatted for standard US Letter size (8.5 x 11 inches). Whether you’re managing work, school, family events, or tracking national holidays, this clean and elegant calendar is perfect for printing and displaying at home, in the office, or in your classroom.
All versions are high-resolution (2000 x 1545 pixels) and available as print-ready PDF files. Choose from four practical layouts below.
1. FREE Printable September Calendar 2025 (Starts on Monday)
Ideal for users who follow the international week format, where Monday is the first day of the week.
2. FREE Printable September Calendar 2025 (Starts on Sunday)
Perfect for those in the U.S. and others who prefer Sunday as the beginning of the week.
3. FREE Printable September Calendar 2025 with Holidays (Starts on Monday)
This version includes all major U.S. federal, state, religious, and cultural observances — ideal for schools, workplaces, and families.
4. FREE Printable September Calendar 2025 with Holidays (Starts on Sunday)
The most comprehensive option: Sunday-start layout with all key holidays clearly marked.
🗓️ Key Holidays & Observances in September 2025
Plan smarter by staying aware of important dates. The holiday versions include all of the following:
- Sep 1 (Mon) – Labor Day (Federal & State Holiday)
- Sep 5 (Fri) – The Prophet’s Birthday (Tentative Date) – Muslim
- Sep 6 (Sat) – Carl Garner Federal Lands Cleanup Day
- Sep 6 (Sat) – Native American Day – Delaware
- Sep 7 (Sun) – National Grandparents Day
- Sep 9 (Tue) – California Admission Day – State Holiday
- Sep 11 (Thu) – Patriot Day & First Responders Day
- Sep 14 (Sun) – Constitution Commemoration Day – Arizona
- Sep 15 (Mon) – Start of National Hispanic Heritage Month
- Sep 17 (Wed) – Constitution Day and Citizenship Day
- Sep 18 (Thu) – Air Force Birthday
- Sep 19 (Fri) – National POW/MIA Recognition Day
- Sep 22 (Mon) – Navratri (Hindu), Emancipation Day (OH), American Indian Day (TN), September Equinox
- Sep 23 (Tue) – Rosh Hashanah (Jewish), State Holiday in Texas
- Sep 26 (Fri) – Native American Day (CA, NV), American Indian Heritage Day (MT, TX), Michigan Indian Day
- Sep 27 (Sat) – Public Lands Day (WY), National Public Lands Day
- Sep 28 (Sun) – Gold Star Mother’s Day
💡 Why Use This Printable Calendar?
- 🖨️ Print-Ready: Optimized for US Letter (8.5″ x 11″) paper.
- 🎨 Elegant Design: Styled with the modern Montserrat font for readability and style.
- ✅ Multiple Options: Choose between Monday/Sunday start and with/without holidays.
- 📄 High-Quality PDFs: Crisp and clear for both home and office printers.
- 🆓 100% Free: No registration, no watermarks, no hidden costs.