If you make the mistake of clicking the FB link, you'll find you're in conspiracy theory territory.. The example shown is "a bit" of a stretch, to be compared to a 1st century Chi Rho. I'm afraid if I kept reading, I'd find they tried linking it to the Masons, Templars, Bilderbergers, Big Foot, & Disco.
Let me tell you something. It is one of the easiest things to do to find correlations without causations in terms of similar aesthetics.
In fact, on another forum I was a part of (before I left only for the admins to ignore confirmations of any account coming from my ip address, thus shadow-banning me), I actually intentionally made a fraudulent "pagan origins" comparison image with only a couple of Google searches and misinformation.
There is no historical connection whatsoever to the Patriarch of Alexandria and it's liturgical development (which looked much, much different before the Chalcedonian controversy with the Copts) to this depiction of a Babylonian god - but if I said that the Patriarch of Alexandria has a direct cultural connection to Egyptian Paganism, which has direct connection to Babylonian Paganism, and that the Patriarch is supposed to represent a Babylonian god, without much research or thought people would believe it.
It's often the case that there's either coincidence, or maybe perhaps there's some underlying human tendencies which are universal in all cultures to make similar aesthetics.
For example, some people will claim that artwork of the Virgin Mary in the East and West have origins from Pagan artwork of pagan goddesses breastfeeding their children.
But can you name me a culture in human history in which mothers don't breastfeed their children? Is it really a stretch that different cultures would paint this theme which by its very nature is natural to all of humanity?
I'm not denying that there was no Pagan influence whatsoever in Christian societies - nobody can deny that. I'm arguing that people draw spurious correlations all the time with art because it isn't hard to do whatsoever, because both coincidence and themes which are constant in different human societies show up.
But even in situations where there are pagan appropriations (like the Christmas tree, which most people can't deny is pagan in origin), even in aesthetics, it doesn't necessarily follow that the entire religion or society is compromised by holding pagan beliefs.
Your use of the weekly calendar is completely, 100% pagan in origin. "Monday" means "Moon day," "Thursday" literally means "Thor's day," "Wednesday" means "Woden's Day" or "Odin's Day", "Saturday" means "Saturn day," and Sunday means "Sun day." Does this mean you are a pagan who is worshiping the Sun, Moon, Thor, Odin, and Saturn indirectly? Are you summoning demons by invoking these gods names (after all, Saint Paul says the gods of the world are devils)? No, of course not.
What's funny is that the Russian weekly calendar is far more Christian than the English weekly calendar. When you translate their days in terms of where the days come from it literally goes (from Monday to Sunday), "the day after the weekend," "second day," "third day", "fourth day", "fifth day", "Sabbath", and "Resurrection."
