Thanks, guys, for your feedback. Here's another iteration.
The numbering of NTP seconds in the vicinity of a leap second seems to differ from one document to another. Here I follow the NTP (version 3) specification, RFC 1305, in which the Leap Indicator (sys.leap, peer.leap, pkt.leap) is 01 if a positive leap second is to occur at the end of the current UTC day, and 00 if no leap second is pending. UTC = 2005-12-31 23:59:59, NTP seconds = 3 345 062 399, LS_pending = 01 UTC = 2005-12-31 23:59:60, NTP seconds = 3 345 062 400, LS_pending = 01 UTC = 2006-01-01 00:00:00, NTP seconds = 3 345 062 400, LS_pending = 00 -- James Maynard Salem, Oregon, USA
Leap Second History.pdf
Description: Adobe PDF document
