"Thu, 01 Jan 1970 20:40:45"

Convert date and time to unixtime.

74445

Another datetime format string at UTC

YYYYMMDD
19700101

Only TIME
20:40:45

General datetime
1970-01-01 20:40:45Z

For Database
1970-01-01 20:40:45

For HTTP1.1
Thu, 01 Jan 1970 20:40:45 GMT

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