Based on Paul Nicholls' Christchurch Quake Map.
This map starts with the 7.2 magnitude foreshock that happened on Wednesday, March 9th @ 2:45 UTC. You can jump ahead to Friday midnight UTC, the day of the 9.0 earthquake (the "mainshock") or jump to Friday @ 5:46 UTC, the time of the 9.0 earthquake itself.