"Sun, 18 Aug 2024 06:40:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
06:40:04
General datetime
2024-08-18 06:40:04Z
For Database
2024-08-18 06:40:04
For HTTP1.1
Sun, 18 Aug 2024 06:40:04 GMT