Date Calculator
   Year  Mon Day Hour Min Sec
Start:
End:
Diff:

Notes:

  • Enter in Start, End, or Difference fields.
  • ENTER will cause a recomputation.
  • Auto will cause End to constantly update
  • For differences, uses average years, months, and lunar months
    • 365.24, 30.436, and 29.53 days, resp.
  • Intercalary seconds (leap-seconds) are not used.
  • .See also Metric Time Units