In the United States, there are four main seasons:

Spring: From March 1st to May 31st.

Some holidays in spring:

March 17th: St. Patrick’s Day

April 1st: April Fool’s Day 

Second Sunday of May: Mother’s Day in the United States

Last Monday of May: Memorial Day

Summer: From June 1st to August 31st.

Some holidays in summer:

Third Sunday of June: Father’s Day

July 4th: The United States’ Independence Day

Fall or Autumn: From September 1st to November 30th.

Some holidays in fall:

First Monday of September: Labor Day

October 31st: Halloween

Second Monday of October: Columbus Day

November 11: Veteran’s Day

Fourth Thursday of November: Thanksgiving Day

Winter: From December 1st to February 28th (or 29th depending on the year).

Some holidays in winter:

December 25th: Christmas

January 1st: New Year

Martin Luther King Jr.’s Day: third Monday in January

February 14th: Valentine’s Day