Revision as of 09:48, 7 July 2025 edit Iheartempirestate (talk \| contribs) 14 edits december 2025 update ← Previous edit		Latest revision as of 15:37, 27 July 2025 edit undo DragonflySixtyseven (talk \| contribs) Autopatrolled, Administrators 90,291 edits -
Line 24: ==Rationale== {{See also\|ΔT (timekeeping)}} [[File:Deviation of day length from SI day.svg\|thumb\|left\|Deviation of day length from SI -based day with shorter days resulting from faster planetary rotation.]] Leap seconds are irregularly spaced because the Earth's rotation speed changes irregularly. Indeed, the Earth's rotation is quite unpredictable in the long term, which explains why leap seconds are announced only six months in advance.

Leap second: Difference between revisions