Personally I think the best time of the zombie apocalyspe would be during the napoleonic wars just because it would look cool and with the fancy british officers with their cutlasses fighting would be badass
Probably the worst time would be now I suppose with the big ass population and it'd be less comical
I think that it would be fricken' horrible if it broke out on the Santa Maria when Christopher Columbus was on his voyage to the new world (The Americas).