- Does it fire "eventually"?
- What is the timezone and current time of your Camunda server / container?
- If you do something like durtation = PT1M (a 1 minute timer), does it work?
Note that timers are not "execute at a exact time", they are "execute after a exact time". Example if the server checks every minute for jobs, it could take a additional 59seconds after your timer's due date, potentially longer if other jobs are being executed.