It's officially September! Back-to-school season is in full swing, pumpkin-spice flavored menu items are here, and we finally have a federal holiday.

There are four months left in the year, and each month is jammed packed with holidays and celebrations. But September brings fall leaves and the long-awaited pumpkin-themed drinks.

The month also brings Labor Day, a federal holiday that will give folks across the country the day off. Hispanic Heritage Month will also start in the middle of September and continue until the middle of October.

So, bust out the plaid shirts, get ready to start picking apples, and enjoy the last few weeks of summer, because here's everything you need to know about what September 2025 has in store.

Are there any federal holidays in September?

Yes! Labor Day is observed on Monday, Sept. 4, this year, and is considered a federal holiday.

In total, 2025 has 12 federal holidays across 11 days, according to the Office of Personnel Management. The next one, Columbus Day, will fall on Monday, October 13. Indigenous Peoples' Day will also fall on Oct. 13.

What religious holidays are in September?

There are multiple religious holidays in September.

The following are some of the holidays and traditional celebrations throughout the month, according to Diversity Resources:

  • Mawlid al-Nabi- Begins the evening of Wednesday, Sept. 3 and ends on Thursday, Sept. 4.
  • Nayrouz- Thursday, Sept. 11
  • Mabon- Monday, Sept. 22
  • Rosh Hashanah- Begins at sundown on Monday, Sept. 22 and ends after nightfall on Wednesday, Sept. 24.
  • Durga Puja- Begins on Sunday, Sept. 28 and ends on Thursday, Oct. 2.

Other significant dates

Here are some more significant dates and anniversaries in September:

  • 9/11 24th anniversary/ Patriot Day- Thursday, Sept. 11
  • Hispanic Heritage Month begins- Monday, Sept. 15
  • Constitution Day- Wednesday, Sept. 17
  • International Day of Peace- Sunday, Sept. 21
  • Autumn Equinox/Autumnal Equinox (start of fall): Monday, Sept. 22

When is September's full moon? And other celestial events

On the day of the full moon, people can look forward to seeing an eclipse, too. Here's what people can expect, according to NASA:

  • Full Moon/Harvest Moon- Sunday, Sept. 7
  • Total Lunar eclipse- Begins the night of Sunday, Sept. 7 and ends in the early morning of Monday, Sept. 8. The eclipse will not be visible in the U.S.
  • New moon- Sunday, Sept. 21
  • Fall Equinox- Monday, Sept 22
  • Partial Solar Eclipse- Sunday, Sept. 21. The eclipse is not visible in the U.S.

Fun (unofficial) national holidays and unique days in September

The following are some of the more unique and odd days celebrated throughout September, according to the National Day Calendar:

  • National Lazy Mom's Day- Friday, Sept. 5
  • National Be Late for Something Day and National Cheese Pizza Day- Saturday, Sept. 5
  • Star Trek Day- Monday, Sept. 8
  • National Bald is Beautiful Day- Saturday, Sept. 13
  • Talk like a Pirate Day- Friday, Sept. 19

September 2025 Calendar

This article originally appeared on USA TODAY: September 2025 calendar: Labor Day, Patriot Day, start of fall, more

Reporting by Julia Gomez, USA TODAY / USA TODAY

USA TODAY Network via Reuters Connect