Cron trigger not firing

I’m using openhab 2.2.0 and I can’t get even the most simple Cron trigger to fire. What am I doing wrong?

rule "HHlights"
when
    Time cron "0 05 21 * * ?"
then
    WP4_Switch.sendCommand(ON)
end

I’ve tried the same rule with cron “0 * * * * ?” which works every time, but whenever I try a fixed time of the day it doesn’t fire.

/Fredrik

Which build?

I have a rule with the following triggers and it works fine. The only difference I see is the extra * but that last one is optional so it should work without it.

  Time cron "0 1 0 * * ? *" or
  Time cron "0 0 6 * * ? *" or
  Time cron "0 0 23 * * ? *"

But I’m on an older build which may make a difference. This might be a newly introduced bug.

I have my various outside Xmas and other lights turning On and Off etc each day working with this:

Time cron "0 00 17 ? * * "
Time cron "0 05 00 ? * * "
Time cron "0 30 23 ? * * "

I’m using build #1084.

I’ve tried changing the cron trigger to ptmuldoons style and that isn’t working either.

At this point all I can recommend is filing an issue on the Eclipse Smarthome Repo.