"Sat, 08 Jun 2024 19:16:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240608
Only TIME
19:16:21
General datetime
2024-06-08 19:16:21Z
For Database
2024-06-08 19:16:21
For HTTP1.1
Sat, 08 Jun 2024 19:16:21 GMT