Seen 6 bright objects flying over mountains behind our house in v shape formation

My Brother walked out on our parents deck to have a smoke. He came back in and told my mother and I to come look at something. When we came out we seen 6 roughly triangle shaped objects flying over the mountains.My brother went and got his telescope and we were able to see them more clearly.They were flying the lenght of the mountain in a v shape formation ,they had no blinking lights and appered to glow over the entire surface. The distance to top of mountain from our house is about 4 miles.We did not here any sounds coming from them.We watched them till they went out of sight.I at the time made a hobby of all types of jets and I could not find any thing like this in my books.
Witness indicates that the date of the sighting is approximate.  PD