"Sun, 30 Jun 2024 18:15:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240630
Only TIME
18:15:21
General datetime
2024-06-30 18:15:21Z
For Database
2024-06-30 18:15:21
For HTTP1.1
Sun, 30 Jun 2024 18:15:21 GMT