Magnus, Magnus Danielson wrote: > Now, what annoys me is that the IERS message says that the leap second > is scheduled for January: > > 8<--- > > Paris, 6 July 2016 > > Bulletin C 52 > > To authorities responsible for the measurement and distribution of time > > > UTC TIME STEP > on the 1st of January 2017 > > > A positive leap second will be introduced at the end of December 2016. > The sequence of dates of the UTC second markers will be: > > 2016 December 31, 23h 59m 59s > 2016 December 31, 23h 59m 60s > 2017 January 1, 0h 0m 0s > --->8 > > It is unfortunate that it says UTC TIME STEP on the 1st of January 2017, > as it is scheduled for 31 December 2016.
Hm, the leap second is inserted at the end of December 31 (which is also said by the message text), but as a consequence the beginning of January 1 is delayed by 1 second, so IMO this statement might be correct, even though it's not formulated very clearly. > This is a new habbit of IERS, and it is unfortunate and not helpful. > Older Bullentin C used the more correct reference to end of June or end > of December. Hm, the oldest bulletin C I found on the IERS web site already has the same statement: https://hpiers.obspm.fr/iers/bul/bulc/bulletinc.10 I find it amusing that until ~2011, if no leap second was scheduled, the message text said: "NO *positive* leap second will be introduced ..." If you're nitpicking you could have expected that eventually a *negative* leap second was to be scheduled. ;-) Martin _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.