Just an added FYI although nobody may give a fuck but I switched to the following split 4 years ago when we had our first kid; I'll turn 40 in a few months:
First of all I don't have anything geared toward a particular day of the week; I have an order that I follow so when I have to miss a day (or 2) I just pick up where I left off. I've got some decent genetics in my legs so I don't ever do calves (they're too big already; lol) so if I am having trouble visiting the gym for a particular period of time I may cut out a leg day so that I don't get sore going heavy on upper body parts which I found occurs with too much rest between body parts.
day 1 - chest/abs
day 2 - arms/abs
day 3 - glutes/hams
day 4 - delts/lats
I can typically get my workouts done in 45-60 minutes easily. I use abs for extra rest between supersetting my push/pull body parts. Just throwing in my 2 cents bc this has worked out great for me. My chest I do alone because it is stubborn and needs full attention;
don't get me wrong, I am completely happy being able to put up 300 lbs at my age, but if I didn't isolate it I would be putting up like 265 for one instead of 6. I reveal this because I want to be clear that if I had stubborn shoulders I would be isolating them - get my drift?
I absolutely love the pump I get from doing bi's and tri's together and my triceps have thrived allowing me a 1/2 dozen reps of 115 on my dip belt.
Anyway, I hope this helps somebody.
***also; I recommend finishing each body part with a drop set.
Again, this workout is just in the best interest of time for the family man...far from ideal, but I still make gains.