Instructions: Generate a correct and concise answer for the question based on the words in the context.
Input: Context : The 2013 Lake Grassmere earthquake was a magnitude 6.6 earthquake that occurred at 2:31:05 pm (NZST) on Friday 16 August 2013.
Question : On what date did 2013 Lake Grassmere earthquake take place?
Output:
16 August 2013