Leap seconds are both unnecessary and useless at solving the problem they are intended to solve. If you care about the position of the sun to second precision,

Leap seconds are both unnecessary and useless at solving the problem they are intended to solve. If you care about the position of the sun to second precision, then time alone tells you nothing - you need location too. Ironically, most people get their location these days using GPS which is based on TAI, not UTC with leap seconds. If you don’t care about the position of the sun to second precision then leap seconds are a nuisance. There’s zero reason to have leap seconds in the definition of time. It should be a database, like tz, that software that wants Earth rotation updates for calculation of sun position can download and incorporate into its calculations for increased accuracy. The fundamental problem with leap seconds is that you can’t predict what the leap second delta between UTC (legal time) and TAI (absolute time) will be in the future. That’s unacceptable, I should be able to know how many seconds there are between 1 July 2024 and 1 July 2026 without needing to wait for a Time Lord to determine it.