The following are summer holidays widely recognized in the United States, some national, others religious/cultural, in chronological order. The first day of summer is celebrated by many cultures/religions/practices, the Summer Solstice, on June 21st. The next is the first major and arguably biggest national holiday of the summer, Independence Day, the 4th of July. Then is a religious time observed by Islam, Ramadan, starting in early-mid August and ending in early-mid September, depending on the Islamic calendar. On the first Monday of September is Labor Day, the second and only other nationally recognized summer holiday. Then comes the Jewish holy day of Rosh Hashanah, in early September or possibly not in summer at all, but in October, based on the Jewish calendar. Nine days after this is Yom Kippur. Finally is the Autumnal Equinox, Sep. 23 based on the sun, another day celebrated by some cultures/religions/practices.