"Sat, 03 Jan 1970 03:43:49"

Convert date and time to unixtime.

186229

Another datetime format string at UTC

YYYYMMDD
19700103

Only TIME
03:43:49

General datetime
1970-01-03 03:43:49Z

For Database
1970-01-03 03:43:49

For HTTP1.1
Sat, 03 Jan 1970 03:43:49 GMT

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