So you go without food from 03.00 am to 04.00 pm...? That's only thirteen hours and I wouldn't call that intermittent fasting, intermittent eating or "intermittent anything".
Martin Berkhan recommends women to fast fourteen hours per day and that's two hours less than his recommendation for men (if I remember correctly). Brad Pilon, author of Eat Stop Eat, recommends 24-hour fasts (at least in my version of his book, I haven't read his most recent version).
Thirteen hours is not enough time to get a lot of benefits from "fasting" in my opinion. I'd say that what you are presenting is a totally normal eating pattern, with a not so normal circadian rhythm. You can compare it to eating dinner at 07.00 pm and having breakfast at 08.00 am, that's also thirteen hours.
By the way, today I broke my fast after 20 hours without food. I usually go without food for 18-20 hours each day. I think you're missing out on one of the best aspects of IF if you only utilize it on your off days (from work), namely that it's really convenient to eat only once or twice a day, each day.