"Sat, 04 May 2024 18:43:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240504
Only TIME
18:43:21
General datetime
2024-05-04 18:43:21Z
For Database
2024-05-04 18:43:21
For HTTP1.1
Sat, 04 May 2024 18:43:21 GMT