When is the First Day of Summer?

Children who are going to school and long for a break often wonder when the first day of summer is coming. Sometimes parents dread it because they know they will have bored children on their hands part of the time, but everyone enjoys summertime for the most part. The first day of summer is the longest day of the year. It occurs on either June 20th or 21st depending on the year. For 2009 it occurred on June 21st, and it will also occur on June 21st for 2010 and 2011. On 2012, however it will occur on June 20th, and then for the next three years it will occur on June 21st again. It repeats indefinitely in cycles of 3 years of 6/21 and 1 year of 6/20 so you will need to check calendars to be sure on any given year which day is the first day of summer. Look here for more information: