Alright. This is an exaggeration, at least I think so but...
When I was in High School I met someone outside while I was walking home. He says he fell in water and it's wintertime. He and his daughter are cold, some of the water got on her from the splash.
I told him that I don't have any money for a car ride, because I'm a student, but asked him to follow me.
We reached a place where there's no shade between the buildings. I've noticed that sometimes there's extremely warm sunlight during winter, and a few areas, such as when I walked outside today to look for a new faucet because I'm clumsy, tend to be very warm, even when it's snowing, I guess.
I told him that if he waits in the sun with his daughter he will warm up, and when the strong, hot sunlight dries him it would be safe to go home. It was 3 o clock, and the warmest sunlight year round is usually at 2. I told him he has about 2 hours and a half before the sun gets weaker. I never saw him again, because when I walk outside, even around the same hours, I always see different people, but I think I may have saved his and his daughter's lives.
He doesn't know my name. I doubt he's reading this. I just used the most basic knowledge I have from when walking through a cold area warmed me the moment there was a large spot of light in between it, and sometimes in Bulgaria, when this original happened, it felt like it was summer in that one spot.
Now that I look back on it... I was a teenager, unexperienced, naive, and maybe telling him to buy a coffee at the local dunkin donuts would have been better advice as that's heated. But the heavy sunlight during daytime was enough to dry his clothing, and his daughters off, and protect them from the cold until it's safe to walk home.
I have to put a disclaimer. Unlike this current year's winter in Astoria, sometimes sunlight does not create such a warm spot, it's difficult to predict, but if you're cold and notice that it does, the best thing to do is stand in it in an emergency if you don't have your phone or anything with you.
I guess I could finish this up by saying: If you feel really cold, although I can't guarentee that every winter will be like this, walk for a bit and find a well lit spot with sunlight in it. If it's warm or hot, all you have to do is stand there in your winter clothes until you warm up. It takes your time but it's free. Sometimes there are benches and you can sit.
The reason this works in a city is that it's very industrial. The floor is cement, we all know what happens when sunlight touches cement. It'd be different in another climate. It's like a small oven.
There was no wind in the area from the tall buildings in the distance blocking it.
Later on I asked another person who seemed cold if they are very cold, and told him all he has to do is stand in the sun, it was warm that winter too in spots with sunlight. His daughter yelled that she wants to keep standing there when I arrived in half an hour from my groceries and gave him a hot coffee. It was really cheap at the time, costing only 1 dollar, and I had carrying around money.
Most people don't know my name, or that I thought up a bunch of technologies and philosophies during my life, but I think I've made my mark on the world.
Sometimes I notice that construction workers started doing this as of recently.