Hello,
Your formulae are written and tested many, many times before. But €250 minimum is too high for this project... The whole project does not cost too much, so no reason to pay this amount. If you agree with my proposal, you can simply invite me directly for the same project for €130, cancelling this post.
If you want to discuss this, don't hesitate to send me a message, we can chat from the Message Board.
A few words about me: I'm developing VBA programs for more than 15 years and I'm a trainer for Excel and VBA (all levels) for 12+ years. As you can guess, formulae like these ones (time handling functions) are typical exercises for the advanced Excel courses.
Looking forward to hear from you,
Kind regards,
Chriskerpini