https://www.ntp.org/reflib/leap/
The NTP Timescale and Leap Seconds
The timescale used by NTP is based on UTC, which is based on the earth's rotation about its axis. As this rotation is slowing gradually, a leap second is...
leap secondsntptimescale
https://timetree.org/book
TimeTree :: The Timescale of Life
timescalelife
https://timetree.org/
TimeTree :: The Timescale of Life
timescalelife