Catch part of the on-going spacewalk and the Soyuz MS-14 launch of a cargo-spaceship to the International Space Station.
Launch is scheduled for 15:38 UT / 11:38 ET today.
Update: Enjoy the spacewalk. The launch is apparently going off tomorrow 22 August on the same timeline. I heard differing date and went with what NASA published. For one reason or another today is not the day. I would imagine it would be too much with the spacewalk going on.