differenceInCalendarDays
import { differenceInCalendarDays } from "https://esm.sh/v135/date-fns@3.6.0/index.d.mts";@example
// How many calendar days are between
// 2 July 2011 23:00:00 and 2 July 2012 00:00:00?
const result = differenceInCalendarDays(
new Date(2012, 6, 2, 0, 0),
new Date(2011, 6, 2, 23, 0)
)
//=> 366
// How many calendar days are between
// 2 July 2011 23:59:00 and 3 July 2011 00:01:00?
const result = differenceInCalendarDays(
new Date(2011, 6, 3, 0, 1),
new Date(2011, 6, 2, 23, 59)
)
//=> 1
function differenceInCalendarDays<DateType extends Date>(dateLeft: DateType | number | string, dateRight: DateType | number | string): number;