it works.
Ending the turn this way means the following things happen in order: 1)
All spells and abilities on the stack are exiled. This includes Time Stop,
though it will continue to resolve. It also includes spells and
abilities that can't be countered. 2) All attacking and blocking
creatures are removed from combat. 3) State-based actions are checked.
No player gets priority, and no triggered abilities are put onto the
stack. 4) The current phase and/or step ends. The game skips straight to
the cleanup step. The cleanup step happens in its entirety.


so the unearth delayed is skipped this turn, but it will wait at the next turn. So it works but with this limitation. The creature stays a little longer on the battlefield.


there is a workaround: activate sundial with the unearth delayed abilities on the stack. They will be removed and the creatures will stay (will not trigger again next turn)