"Sun, 25 Jan 1970 12:03:13"

Convert date and time to unixtime.

2116993

Another datetime format string at UTC

YYYYMMDD
19700125

Only TIME
12:03:13

General datetime
1970-01-25 12:03:13Z

For Database
1970-01-25 12:03:13

For HTTP1.1
Sun, 25 Jan 1970 12:03:13 GMT

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