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 passed30 years 11 months 20 days 10 hours 8 minutes 58 seconds
Unix timestamp523440000
Seconds977821018
Minutes16297016.97
Hours271616.95
Days11317.37
Weeks1616.77
Months371.67
Years30.97
Decades3.1