Google Code Jam is an international programming competition hosted and administered by Google.

As you want to do participate in Google Code Jam exam and for the same looking for its key dates, so I am providing same:

Key dates for Google Code Jam 2016:

Date Time (UTC)* Duration Description
Tuesday, March 8, 2016
Ends: Sunday, April 10, 2016 at 02:00 UTC 19:00 UTC 32d 7hr Registration
Friday, April 8, 2016 23:00 UTC 27hr Qualification Round
Saturday, April 16, 2016 01:00 UTC 2hr 30min Online Round 1: Sub-Round A
Saturday, April 30, 2016 16:00 UTC 2hr 30min Online Round 1: Sub-Round B
Sunday, May 8, 2016 09:00 UTC 2hr 30min Online Round 1: Sub-Round C
Saturday, May 28, 2016 14:00 UTC 2hr 30min Online Round 2
Sunday, May 29, 2016 14:00 UTC 3hr Distributed Code Jam Online Round 1
Saturday, June 11, 2016 14:00 UTC 2hr 30min Online Round 3
Sunday, June 12, 2016 14:00 UTC 3hr Distributed Code Jam Online Round 2
Friday, August 5, 2016 16:30 UTC 4hr Onsite Finals
Saturday, August 6, 2016 16:30 UTC 4hr Distributed Code Jam Onsite Finals