"Sun, 22 Dec 2024 18:45:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241222
Only TIME
18:45:21
General datetime
2024-12-22 18:45:21Z
For Database
2024-12-22 18:45:21
For HTTP1.1
Sun, 22 Dec 2024 18:45:21 GMT