Between April 13 and April 21st there have been
2013/04/21 Mag 6.1 IZU ISLANDS, JAPAN REGION
2013/04/20 Mag 6.1 KURIL ISLANDS
2013/04/20 Mag 6.6 WESTERN SICHUAN, CHINA
2013/04/19 Mag 6.0 EAST OF THE KURIL ISLANDS
2013/04/19 Mag 7.2 KURIL ISLANDS
2013/04/16 Mag 6.6 NEAR NORTH COAST OF NEW GUINEA, P.N.G.
2013/04/16 Mag 7.8 IRAN-PAKISTAN BORDER REGION
2013/04/14 Mag 6.6 BOUGAINVILLE REGION, PAPUA NEW GUINEA
2013/04/13 Mag 6.0 VANUATU
Note- I didn't put all the Kuril Islands quakes marked as a dot because some overlaid each other. I just wanted you to get a rough idea as to where these quakes occurred.