I had the zapper open at one point and it said I had 7 minutes and some seconds to wait. So I left it there and did other things with the idea of refreshing the page when I came back. I did just that and got the weirdest outcome ever: You have -1 year 11 months 4 weeks 1 day 23 hours 31 minutes 33 seconds remaining before you can use the zapper again!

Can some one explain this and how to fix it?

** Now it says You have 23 minutes 8 seconds remaining before you can use the zapper again! - still not sure if that's write though.

Possible daylight savings issue. There are posts in the bugs section about the same thing but with quest timers. They should resolve automatically sooner or later.