Orthodox Church…
http://tirekovmirece.com/Novost/Св.Димитрија-или-Митровден-8=ми-ноември
From Stanford…
Wikipedia…
In the Bible…
Who was Mithras in the Bible?
2, 3. \4 Mithra was the god of wide pastures and the giver of gifts. He was worthy of sacrifice and worship and desired the respect and prayer of the faithful, on whom he bestowed bounteous gifts.
aaand…
in the Rings of Power…
…you know Mitrahndir…who brings dead trees back to life, literally
What is it called when a tree grows out of a dead tree?
This phenomenon is called epicormic growth or suckering. This is not unusual. The top of the tree died, but the roots may still have a little energy left in them so they send out some shoots. Unfortunately, the new growth is not a good replacement for the dead tree.
and the mithril…the mineral, the metal in the Khazad-Dum mines…etc…
This place Khazad-Dum like a place , or better yet as a planet in the galaxy far…far away…is mentioned only in only one more sci-fi series Babylon 5, as far as i know, as Z’ha’dum
Take your pick,and happy holidays to those of you who celebrate the Orthodox Day of Mithras. 
A hint for a trial, or an experiment if you want, that this day is important and special:
Take any branch from any plant, cut it at one end diagonally. Stick that part directly into the ground, tomorrow on that day but in the morning.
It can be a branch from a tree, from a flower, from a vine, etc. You can plant it, i.e. stick it in any kind of soil, it doesn’t matter, it will always catch and come to life,again.
But only if you do it on this day, tomorrow, November eighth,before noon.