Location: 22 km ENE of Christchurch, New Zealand Period: 23 Dec 2011 01:11:22 - 24 Dec 2011 07:39:42 (1 day 6 hours 28 minutes) Volcanoes in 100km radius: None Earthquakes: 25 3 swarms found nearby. 2010 PS20100904.1(65.9km) 3 Sep 12 hours 5 earthquakes 2011 S20110222.1(13.9km) 21 Feb 2 days 16 hours 48 earthquakes PS20111223.1(4.1km) 23 Dec 1 hours 5 earthquakes