During this period, the moon reaches its first quarter phase on Monday October 3rd. At that time the moon will lie 90 degrees east of the sun and will be set between 22:00 and 23:00 local standard time (LST) on the evening of the 2nd. As the week progresses the waxing gibbous moon will begin to seriously interfere with meteor observing as it approaches its full phase. This weekend, the morning hours will be free of interfering moonlight.