The only time it's made a palpable difference for me was when I looked up the time info on some sunrise beach photos. It had been a while since I'd been to this beach, and you needed to plan for sunrise at a specific segment of outgoing tide height, so I was trying to correlate a previous trip with upcoming tides and sunrise times. It's rather disappointing to get up at 4:00 AM, drive an hour and a half, and find that the tide is too high to get on the beach when the sun is coming up, or the trees you want pictured in the surf are high and dry. The stars align about once every two weeks for this.