@SIG@ or @DATE@ is replaced to DateTimeMacro.
[[DateTime(@date@)]]
[[DateTime(2003-12-31T16:06:00)]]
2024/11/14 16:27:15 GMT
2024-11-14 16:27:15
2004-10-11 18:16:39
2024-11-14 16:27:15
2004-10-11 18:16:39
[[DateTime(2003-12-31T16:06:00)]]