I noticed last night that the sun in Keene, NH where I’m staying seemed to go down much earlier than I expected for early days of summer. It turns out that I was right: sunset last night was 8:32 p.m.
Back in Charlottetown it didn’t set until 9:09 p.m.. And even up at my parents’ place, which is in the same time zone as Keene and seems “close,” there was an extra 30 minutes of daylight as the sun set at 9:05 p.m..
Go even further east and they get even less of an evening: in Cape Cod the sun set at 8:20 p.m.
Go north and west to the western extremes of eastern time in Thunder Bay and the sun set at 10:03 p.m.