"Sun, 01 Feb 1970 18:27:00"

Convert date and time to unixtime.

2744820

Another datetime format string at UTC

YYYYMMDD
19700201

Only TIME
18:27:00

General datetime
1970-02-01 18:27:00Z

For Database
1970-02-01 18:27:00

For HTTP1.1
Sun, 01 Feb 1970 18:27:00 GMT

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