I found 20 minutes between commitments this morning & that's all I needed!
In fact, I've done many effective workouts in less than 10 minutes! Not every day has to be about scorching a bajillion calories or making "gains" anyway; some maintenance days that just keep your head in the game are fine.
Don't skip your workout just because you don't have time to do the WHOLE thing, or won't have the right equipment or space. If it's not meant to be a rest day, something is better than nothing because one day can turn into 2 which turns into 3 and before you know it, you "feel" off track, your eating starts slacking & it's a downward spiral that can happen. And re-starting is tough!