We keep ours in stables/fields which we rent (by ourselves) in our village.
Our routine differs greatly depending on the time of year.
At this time of year (really from Easter to November) they are out all the time so we check them twice a day, top up their water, change their electric paddock configurations, give hay (if necessary), change rugs, poo picking, paddock maintenance (bramble, nettle, thistle cutting) and repairs.
During the Winter/early Spring they come in at night. This involves getting down early, giving breakfast, changing rugs, turning out, mucking out, sweeping up, setting box for night then in the evenings (which are often pitch black) getting them in, changing rugs, doing feeds/wetting hay nets etc.
Obviously you have to factor in grooming/ riding times, tack cleaning, vet/farrier/worming etc.
We wouldn't change it for the word but by March we are exhausted and praying for the clocks to change and warm weather.