The service will allow you to know how many seconds, minutes, hours, days, weeks, months and years have passed from the date.

Enter the date  Time zone or Full information on the date
Have passed31 year 3 month 10 days 18 hours 55 minutes 8 seconds
Unix timestamp523440000
Seconds987512108
Minutes16458535.13
Hours274308.92
Days11429.54
Weeks1632.79
Months375.35
Years31.28
Decades3.13