Skip to stories

PlanetPast

All stories Math Physics Chemistry Biology Earth science Space Technology History Religion Society

Search stories

EN

EnglishEN
ไทยTH

leap second

Every film that mentions leap second.

1 story

HistoryHow Time Zones WorkWho Decides What Time It Is11 min1522 to 2026

Show all stories

PlanetPast Interactive films about math, science and history. Every figure links to the research it comes from.

All stories People Places Organisations Topics RSS Sitemap© 2026

As an Amazon Associate, PlanetPast earns from qualifying purchases.