Sunday and Monday, August 11 and 12, 2013, all night.
The peak of the Perseid meteor shower, usually the best in the year, occurs in the middle of the day on Monday August 12, so both the night before and the night after will both be good to observe meteors.
Usually meteors are more frequent after local midnight, around 1 a.m. local daylight saving time.
The crescent moon setting before 11 p.m. won’t interfere with the meteors, which are best observed from a dark country location.
Credit: Starry Night Software