"Sun, 18 Jan 1970 11:25:44"

Convert date and time to unixtime.

1509944

Another datetime format string at UTC

YYYYMMDD
19700118

Only TIME
11:25:44

General datetime
1970-01-18 11:25:44Z

For Database
1970-01-18 11:25:44

For HTTP1.1
Sun, 18 Jan 1970 11:25:44 GMT

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