"Sat, 13 Jul 2024 23:38:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240713
Only TIME
23:38:21
General datetime
2024-07-13 23:38:21Z
For Database
2024-07-13 23:38:21
For HTTP1.1
Sat, 13 Jul 2024 23:38:21 GMT