Monty Solomon writes that Meta engineers Oleg Obleukhov and Ahmad Byagowi have come out against leap seconds in “It’s time to leave the leap second in the past”[1], which gives a shoutout to the leap-seconds.list file that Tim just updated in TZDB’s development version. Meta uses a 17-hour quadratic smear starting at midnight UTC, whereas Google and Amazon use a 24-hour linear smear from noon to noon UTC.[2] Obleukhov and Byagowi list several reasons leap seconds are a pain, say that the leap second is doing more harm than good (take that, scientists and astronomers!) and conclude that they “are supporting a larger community push to stop the future introduction of leap seconds”. Although I don’t see any new technical material there, their note prompted me to reread [2] and notice that Google provides an unsmear library[3] that’s worth mentioning, so I installed the attached proposed patch into the development version. [1] https://engineering.fb.com/2022/07/25/production-engineering/its-time-to-lea... [2] https://developers.google.com/time/smear [3] https://github.com/google/unsmear