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DateDelta
The number format behind database timestamps, API responses, and log files.
January 1, 1970 UTC was chosen somewhat arbitrarily by early Unix developers as a convenient reference point — it predates almost no real-world data that mattered to early computing, and the math works out to fit comfortably in a 32-bit integer for decades.
Systems that store Unix time as a signed 32-bit integer will overflow on January 19, 2038 — a real, if increasingly rare, legacy-software concern, similar in spirit to the Y2K bug, that modern 64-bit systems have already resolved.
Duration between two times of day, in hours and minutes.
OpenHours worked from clock-in, clock-out, and break time.
OpenWeekly total hours and overtime from daily entries.
OpenAnnual cost of your daily commute.
Open