"Sat, 03 Jan 1970 21:48:55"

Convert date and time to unixtime.

251335

Another datetime format string at UTC

YYYYMMDD
19700103

Only TIME
21:48:55

General datetime
1970-01-03 21:48:55Z

For Database
1970-01-03 21:48:55

For HTTP1.1
Sat, 03 Jan 1970 21:48:55 GMT


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