Running for a bit and then stopping, probably needs cleaned.
Based on my experience it is cheaper to have someone else clean your clock than it is to get the tools to do it correctly yourself, that usually cost more than what you probably paid for the clock. That said there are many people on...
Look closely at the bottom on the clock is may have a date stamp. Reverse order and a letter representing the month.
The dial looks correct for the clock. You take the works out for maintenance and might just not have been aligned right.