Q: Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.
Context : The 1999 Chamoli earthquake occurred on 28 March 1999 in the Chamoli district in the Indian state of Uttar Pradesh (now in Uttarakhand).
Answer : 28 March 1999
A:
On what date did 1999 Chamoli earthquake occur?