I dislike summer for this very reason! We have a bit of shade out the back so I take the kids out at about 4/4:15 but with hats and most of then time they will have suncream on anyway. Inside at 5/5:15 for a bath or shower (usually bath but shower if running late) and dinner at about 5:45 (I always prepare during the day).

DH is more often that not still at work until late so it's then tidy up, teeth, little play, story and bed by say 7/7:30.