Given the task definition and input, reply with output. 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 Naval Battle of Hyeres Islands was fought on 13 July 1795 off the Hyeres Islands, a group of islands off the French Mediterranean coast, about 25 kilometres (16 mi) east of France's main naval base in the Mediterranean, Toulon.
Answer : 13 July 1795
When did Battle of Hyeres Islands occur?