"Sun, 18 Jan 1970 19:43:44"

Convert date and time to unixtime.

1539824

Another datetime format string at UTC

YYYYMMDD
19700118

Only TIME
19:43:44

General datetime
1970-01-18 19:43:44Z

For Database
1970-01-18 19:43:44

For HTTP1.1
Sun, 18 Jan 1970 19:43:44 GMT


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