02-06-2021, 08:22 AM
One thing to mention about GTS (if it hasn’t been mentioned already) is that the final pip was the same length as the others until UTC was introduced in the seventies. This was because if a leap second was introduced there would be 7 pips. This happened last about 5 years. Presumably if there was ever a negative leap second there would be 5 pips.
The last time this happened was at the new year in 2016/2017. This meant the last second of the year was 23:59:60 rather than 23:59:59
Previous to that it was at the end of the day on June 30th 2015, but due to BST this was 00:59:60
On July 1st in the UK.
The next time it could happen is the end of this year.
The last time this happened was at the new year in 2016/2017. This meant the last second of the year was 23:59:60 rather than 23:59:59
Previous to that it was at the end of the day on June 30th 2015, but due to BST this was 00:59:60
On July 1st in the UK.
The next time it could happen is the end of this year.