"Sun, 23 Jun 2024 19:36:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240623
Only TIME
19:36:21
General datetime
2024-06-23 19:36:21Z
For Database
2024-06-23 19:36:21
For HTTP1.1
Sun, 23 Jun 2024 19:36:21 GMT