Proposed new time for Friday nite class 7.15pm

I would like to ask if it is ok to re-schedule Friday evening class to new time of 7.15pm to 8.45pm in August?

Please let me know only if you have an issue against the proposed new time.
So if I don't hear any strong objections from you I take it that it's ok!

I will confirm this before the last week of July so let me know by this Wednesday.

Thank you.