The graphic shows the height of the radiant of the meteor shower

In blue the hours with the Sun under the horizon (summer legal times)


  DAY        TIME    H RAD   AZIM    SUN     MOON

2012:08:12   20:00   13.2    16.3   N.Tw.    Down
2012:08:12   21:00   17.0    23.6   A.Tw.    Down
2012:08:12   22:00   22.1    30.1   Night    Down
2012:08:12   23:00   28.2    35.7   Night    Down
2012:08:13   00:00   35.1    40.4   Night    Down
2012:08:13   01:00   42.6    43.7   Night    Down
2012:08:13   02:00   50.5    45.3   Night    Up
2012:08:13   03:00   58.4    44.2   Night    Up
2012:08:13   04:00   65.9    38.3   A.Tw.    Up
2012:08:13   05:00   71.8    23.3   C.Tw.    Up

Date, times, height and azimuth of some radiants; position of the Sun and of the Moon