Leap Second Time Adjustment Day

Leap Second Time Adjustment Day was not observed recently. It was observed on June 30th in 1972. It was observed annually on December 31st from 1972 until 1979. It was observed annually on June 30th from 1981 until 1983. It was observed on June 30th in 1985. It was observed on December 31st in 1987. It was observed annually on December 31st from 1989 until 1990. It was observed annually on June 30th from 1992 until 1994. It was observed on December 31st in 1995. It was observed on June 30th in 1997. It was observed on December 31st in 1998. It was observed on December 31st in 2005. It was observed on December 31st in 2008. It was observed on June 30th in 2012. It was observed on June 30th in 2015. It was observed on December 31st in 2016.

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