50 minutes is at 8:45
On Motzei Tisha B’Av Nidcheh, (Sunday night this year) one makes havdala and is permissible to drink the cup of wine or grape juice. We do not make a bracha on besamim or a Ner. We only make a borei pri Hagafen and say the bracha of Hamavdil.
The minhag is not to eat meat or drink wine until Monday morning. However laundry and haircuts are permitted right away after the fast on Sunday night. To hear music its brought down to wait until the morning as well.