"Wed, 14 Jan 1970 09:18:20"

Convert date and time to unixtime.

1156700

Another datetime format string at UTC

YYYYMMDD
19700114

Only TIME
09:18:20

General datetime
1970-01-14 09:18:20Z

For Database
1970-01-14 09:18:20

For HTTP1.1
Wed, 14 Jan 1970 09:18:20 GMT

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