"Sun, 18 Jan 1970 12:52:18"

Convert date and time to unixtime.

1515138

Another datetime format string at UTC

YYYYMMDD
19700118

Only TIME
12:52:18

General datetime
1970-01-18 12:52:18Z

For Database
1970-01-18 12:52:18

For HTTP1.1
Sun, 18 Jan 1970 12:52:18 GMT

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