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EV-T04Standalone tool

Date duration calculator

Count elapsed calendar days and weeks between two dates without daylight-saving-time drift.

EV-T04

Count the days between dates.

Measure elapsed calendar days without daylight-saving-time drift.

Formula and assumptions: Dates are interpreted as UTC calendar dates. The result is elapsed time, so the start date itself is not counted as a completed day.

READYEnter a scenario, then calculate.
Method reference: NIST time and frequency ↗