"Sat, 15 Jun 2024 05:05:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
05:05:21
General datetime
2024-06-15 05:05:21Z
For Database
2024-06-15 05:05:21
For HTTP1.1
Sat, 15 Jun 2024 05:05:21 GMT