5. The Curious Case of 1977 and 1986
The tournament was played in January till 1919 and shifted to March in 1920. It again changed to August during 1923-1976.
But, due to a change in schedule caused by climatic fluctuations, Australian Open was played twice in 1977. It was played at the start of January and mid of December.
It was played during mid-December till 1985. But, it was decided to shift the next tournament to mid-January as the time failed to have the presence of top players. This meant the tournament wasn’t played at all in 1986! The next match down under was held in January 1987.