"Sun, 18 Aug 2024 04:39:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
04:39:51
General datetime
2024-08-18 04:39:51Z
For Database
2024-08-18 04:39:51
For HTTP1.1
Sun, 18 Aug 2024 04:39:51 GMT