Convert Seconds & Days Since Year 0/1

Seconds Since Year 0

This tool converts seconds since year 0 to human readable dates.
It's compatible with MySQL's TO_SECONDS function (MySQL 5.5+).
Year 0 is defined as 0000-00-00 00:00 GMT. Please note that this is not a valid date! There is no year 0.

At this time there are ~63655347889 seconds since year 0 (6.366*1010) .
Visit the homepage to convert to/from seconds since 1/1/1970.

Convert seconds to normal date:

 
 

Days Since Year 0

Compatible with MySQL's TO_DAYS function (MySQL 5.5+).

There are 736751 days between 0000-00-00 and today (Feb 26, 2017).

Convert days to normal date:

 

Seconds Since 0001-01-01 AD

This tool converts seconds since January 1, 1 AD (extrapolated Gregorian calendar) to regular dates.
There were ~63623725489 seconds since Jan, 1 0001 (6.362*1010).

 
 

Days Since 0001-01-01 AD

There were 736385 days since January 1, 1 AD.

 

Please note: This page uses JavaScript to convert times & dates. This may not work properly in all browsers.

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Date and Time
Week numbers
Weeks by year
Day numbers
Days by year
Years/leap years
Calculate difference
   between two dates


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