3 calculators in this category
- Day of the Week CalculatorZeller's congruence (1882); ISO 8601 weekday numberingEnter any date and this calculator returns the weekday, the ISO 8601 weekday number, the day of the year and the Julian Day…
- ISO Week Number CalculatorISO 8601-1:2019 week numberingThis calculator converts a date to its week number and back again. In ISO 8601 mode it returns the week number, the week-based…
- Age in Days, Hours & Minutes CalculatorFliegel–Van Flandern Julian Day NumberEnter a date of birth and this calculator returns the exact elapsed time to any reference date: total days, weeks, hours…