The Sky This Month, 2011 July 27 – August 23 — Naval Oceanography Portal

August 1st was Lammas, one of the traditional "cross-quarter" days of the ancient Celtic calendar. Traditionally this date marked the middle of the summer season and was the first of several harvest festivals celebrated in medieval northern Europe. Today it is the only cross-quarter day that is not observed in some form in the English-speaking world. Don’t fear that summer is almost gone, though, since the actual mid-point of the season falls one week later on August 7th.

The Sky This Month, 2011 July 27 – August 23 — Naval Oceanography Portal