UTC
Coordinated Universal Time is the atomic-timescale baseline. Always reference UTC for technical specs and logs.
Chronology Lab
Common terms clarified so every planner and chronologist shares the same vocabulary.
Coordinated Universal Time is the atomic-timescale baseline. Always reference UTC for technical specs and logs.
An extra second added to UTC to keep atomic time aligned with Earth’s rotation when it slows.
Week number per ISO 8601, starting Monday; week 1 contains January 4 of that year.
A simple vertical indicator used to track solar time via its shadow.
Regions that share the same UTC offset; some adjust for daylight saving time on local schedules.
Defined by 9,192,631,770 oscillations of a cesium transition—our most precise second yet.