I haven't had a chance to download the USGS data and compile a program to check how far back this pattern goes.
It's easier to just wait for the 22nd.
Make that for the past four cycles (which I checked manually)...
Lot’s of M7 quakes in a year, those are not that unusual.
http://earthquake.usgs.gov/earthquakes/eqinthenews/2010/
•Magnitude 7.3 VANUATU REGION December 25, 2010
•Magnitude 7.4 BONIN ISLANDS, JAPAN REGION December 21, 2010
•Magnitude 7.7 KEPULAUAN MENTAWAI REGION, INDONESIA October 25, 2010
•Magnitude 7.0 SOUTH ISLAND OF NEW ZEALAND September 03, 2010
•Magnitude 7.1 ECUADOR August 12, 2010
•Magnitude 7.3 VANUATU August 10, 2010
•Magnitude 7.0 NEW BRITAIN REGION, PAPUA NEW GUINEA August 04, 2010
•Magnitude 7.4 MORO GULF, MINDANAO, PHILIPPINES July 23, 2010
•Magnitude 7.6 MORO GULF, MINDANAO, PHILIPPINES July 23, 2010
•Magnitude 7.3 MORO GULF, MINDANAO, PHILIPPINES July 23, 2010
•Magnitude 7.3 NEW BRITAIN REGION, PAPUA NEW GUINEA July 18, 2010
•Magnitude 7.0 NEAR THE NORTH COAST OF PAPUA, INDONESIA June 16, 2010
•Magnitude 7.5 NICOBAR ISLANDS, INDIA REGION June 12, 2010
•Magnitude 7.1 VANUATU May 27, 2010
•Magnitude 7.2 NORTHERN SUMATRA, INDONESIA May 09, 2010
•Magnitude 6.8 SOLOMON ISLANDS April 11, 2010
•Magnitude 7.8 NORTHERN SUMATRA, INDONESIA April 06, 2010
•Magnitude 7.2 BAJA CALIFORNIA, MEXICO April 04, 2010
•Magnitude 7.0 RYUKYU ISLANDS, JAPAN February 26, 2010
•Magnitude 7.0 HAITI REGION January 12, 2010
•Magnitude 7.1 SOLOMON ISLANDS January 03, 2010