"Thu, 29 Jan 1970 20:43:23"

Convert date and time to unixtime.

2493803

Another datetime format string at UTC

YYYYMMDD
19700129

Only TIME
20:43:23

General datetime
1970-01-29 20:43:23Z

For Database
1970-01-29 20:43:23

For HTTP1.1
Thu, 29 Jan 1970 20:43:23 GMT

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