Mad at myself yet once again. I took Max out in a Tupperware with a mesh lid to sunbath (no water in container), I usually do it 1-2 times a week, but recently the weather had been very windy and cold so haven't taken him out in like a week already. So today there's very little wind and I decide to take him out to sunbath, the outside temperature is about 19 degree Celsius. I put him in partial shade, mostly direct sunlight, and I went inside to make lunch... I set my phone alarm to remind me in 25 minutes. And then about 1.5 hours later I realised I haven't put Max back in the tank yet and my phone alarm didn't go off! Quickly went outside and saw Max under direct sunlight, the shaded part had moved so the whole container is under direct sunlight, he's just laying there, head and legs stretched out, staring at me. I quickly picked him up, he still had a lot of energy as he wiggles around when I picked him up but he does feel quite warm. Put him back on tank dock and he went directly in water (water temp about 26 Celsius). He seems normal, swimming around fine. Went back to see why my phone didn't go off and realised it ran out of battery and turned off... I guess I was lucky that it was a cool day so even though he was under direct sunlight at least the temp is cool enough to prevent him from overheating. Now hoping that he doesn't have any long term effect or any sunburn. Might have to use the kitchen's oven alarm next time. Anyone know what sunburn look like on turtles? His skin looks normal from what I see, when I got him inside there's white salt residue on his shell and skin from the salt in tank water, that's gone once he's back in water. Other than that his skin looks fine.