"Wed, 21 Jan 1970 14:30:22"

Convert date and time to unixtime.

1780222

Another datetime format string at UTC

YYYYMMDD
19700121

Only TIME
14:30:22

General datetime
1970-01-21 14:30:22Z

For Database
1970-01-21 14:30:22

For HTTP1.1
Wed, 21 Jan 1970 14:30:22 GMT

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