Hi Dan,
good to hear from you!
Even if it is a little late: Happy New Year! :-)
Now to your issue.
The $*time parameters are in epoch if evaluated in a trigger context (originally) and in expressions (those were added later).
This allows halfway easy date arithmetic (e.g. if the job didn't finish 2 hours after start, trigger some notifier) but is cumbersome in your case because you'll have to find that magic number first.
The utility "date" is your friend, like in
$ date '+%s' -d '2026-01-26 00:00:00'
1769382000
And the condition
1769382000 < int($starttime)
or so, should evaluate to true from January 26th on.
Note that the job will be submitted nevertheless, but it will be disabled, which means that it'll not be executed and will terminate with the final exit state with lowest preference (usually SUCCESS).
Hope that helps, but if it doesn't work as expected, please tell me.
Best regards,
Ronald