"Sun, 18 Jan 1970 15:20:19"

Convert date and time to unixtime.

1524019

Another datetime format string at UTC

YYYYMMDD
19700118

Only TIME
15:20:19

General datetime
1970-01-18 15:20:19Z

For Database
1970-01-18 15:20:19

For HTTP1.1
Sun, 18 Jan 1970 15:20:19 GMT

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