I'm pretty much an intermittent faster of a few years now simply by not eating breakfast. Never really liked eating in the mornings because a) I wasn't really hungry b) I'd rather spend my time with sleeping than waking up to eat, lol, but that's just me.

First meal is usually at work, because of lunch hour when there's literally nothing else to do other than to eat - something light and not too much so that I don't fall into food coma in the middle of a day (that happened way too often in school, can't resist free food, haha). On a typical week day I have about an 8-10 hour eating window. On weekends or non-workdays I might start eating as late as 6PM. Sometimes I'm just so engaged with something that it would be awkward to stop eating which might cause me to break focus.

It all comes naturally to me and I don't need or want to look for an exact eating window. Also the body is very adjustable, some Youtuber had tried eating only every other day, and soon he indeed only felt hungry every other day after his body had picked up the new rhythm. So hunger itself doesn't necessarily mean you need food but has a lot to do with eating habits also.