Finally, “when” can be used to provide further information about a particular point in time. Compare the following two sentences:
- I will go jogging tomorrow when there are no cars in the streets.
- I will go jogging tomorrow, when there will be no cars in the streets.
I don't see the difference in meaning between these 2 sentences.
In the second one the first action is "I will go jogging tomorrow "and the second action is the clause time . So to indicate this ,the clause time takes the mark of the future whereas in the first one it is the contrary ,the clause time comes first .(no need for the future) But in meaning I don't understand the difference.