"Sun, 25 Jan 1970 12:33:40"

Convert date and time to unixtime.

2118820

Another datetime format string at UTC

YYYYMMDD
19700125

Only TIME
12:33:40

General datetime
1970-01-25 12:33:40Z

For Database
1970-01-25 12:33:40

For HTTP1.1
Sun, 25 Jan 1970 12:33:40 GMT


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