Today Comet ISON goes around the sun. this is the most uncertain part of the comets path. in the next 24/48 hours will determine where its gonna go.
http://www.theguardian.com/science/across-the-universe/2013/nov/28/comet-ison-how-to-spot?CMP=fb_gu
http://www.theguardian.com/science/across-the-universe/2013/nov/28/comet-ison-how-to-spot?CMP=fb_gu