- Astronomy: On the summer solstice, June 20th or 21st.
- Meteorology: June 1.
- Elementary through university: vary from early-May to mid-June.
- Economists and rental prices: Memorial Day

This came up in the pre-meeting banter at work. Different parts of the country and even school districts vary on when they let out for the summer.
The local university has a 15 week term with finals a 16th week. A high school student taking some classes in addition to regular stuff would take the university finals and then have another couple weeks before taking the high school ones. And perhaps an advantage over peers just taking high school work because of the extra time.
Well, when does Summer end?
- Astronomy: On the fall equinox September 20th or 21st.
- Meteorology: September 1.
- Elementary through university: vary from early-August to mid-September.
- Economists and rental prices: Labor Day