Premature ventricular contractions (PVCs, PVC) are premature heartbeats originating from the ventricles of the heart. Premature ventricular contractions are premature because they occur before the regular heartbeat. The heart has four chambers. The upper two chambers are the atria, and the lower two chambers are the ventricles.
When Can I See the Perseids? The Perseid meteor shower, one of the brighter meteor showers of the year, occurs every year between July 17 and August 24. The shower tends to peak around August 9-13. The best time to view the Perseids, and most other meteor showers, is when the sky is the darkest.
Aquarius is also the radiant location for several meteor showers, including the Eta Aquarids of May, the North Delta Aquarids which peak on July 29, the South Delta Aquarids which peak on August 13, and the lesser Iota Aquarids, also of August.