As we speak using a conjunction like:
- "When joy will come, then we will go to market."
- "We will go to market when joy comes."
Which of these sentences are correct in speaking English?
The first sentence is not grammatical, whereas the second is Ok.
When you talk about the future with the conjunction when, you use the present simple or the present perfect in the when-clause, not the future with shall or will.
When Joy comes, we will go to the market.
"When joy comes, we will go to market"