I'm pretty new at this myself, I am sure someone with more experience will be along shortly though. I can say, I had a melomel that I was convinced I had killed because it took 3 days to start showing signs of fermentation. D-47 is supposed to be good between 59-68 degrees farenheit, I'd imagine it is alright. If it is a bit too cold it could delay the ferment a touch, but again it is still really early. Probably a good time to just relax and have some homebrew.
