"Sun, 18 Aug 2024 15:30:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
15:30:51
General datetime
2024-08-18 15:30:51Z
For Database
2024-08-18 15:30:51
For HTTP1.1
Sun, 18 Aug 2024 15:30:51 GMT