"Wed, 14 Jan 1970 04:38:43"

Convert date and time to unixtime.

1139923

Another datetime format string at UTC

YYYYMMDD
19700114

Only TIME
04:38:43

General datetime
1970-01-14 04:38:43Z

For Database
1970-01-14 04:38:43

For HTTP1.1
Wed, 14 Jan 1970 04:38:43 GMT

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