These no specific time to hold options,one thing to watch out for is time decay.If you are a buyer of short term options(less than 2 weeks) your timing must be spot on.Your expected move must occur right away,or time decay will start to eat at your option's value at a great rate of knots.This is because the last 2 weeks sees a dramatic drop in time premium for an at- the -money option.Don't be enticed by cheap options in the final few weeks before expiration they are anything but cheap.
Hope this helps