The 1977 Gillette Cup was the fifteenth Gillette Cup, an English limited overs county cricket tournament. It was held between 29 June and 3 September 1977. The tournament was won by Middlesex County Cricket Club who defeated Glamorgan County Cricket Club by 5 wickets in the final at Lord's.
Cricket in England is played in the summer.
While the article states the tournaments were played in the summer, we are not told if Cricket is played other times of the year.