"Sun, 18 Jan 1970 21:48:14"

Convert date and time to unixtime.

1547294

Another datetime format string at UTC

YYYYMMDD
19700118

Only TIME
21:48:14

General datetime
1970-01-18 21:48:14Z

For Database
1970-01-18 21:48:14

For HTTP1.1
Sun, 18 Jan 1970 21:48:14 GMT


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