[Jimbee (OP)]

Strange thing about religion, is because it can sometimes lead to enlightenment. The Church was just part of life in the Middle Ages, it couldn't be separated from it. So things like the Renaissance and Age of Enlightenment were bound to religion, couldn't be avoided. Consider Deism, for example, because atheism at the time would just be impossible, or at least unheard of.

The New Testament theology and other stuff is based on Greek philosophy, because it was just the current science that the time. How odd some fundamentalists still regard as fact. It was "fact" back then. But much off it, like the world is flat, or surrounded by water, has just been disproven. Sorry, folks.

And you know the Gregorian Calendar reform was instituted by Pope Gregory XIII in 1582. And is the model of scientific perfection. Even Neil DeGrasse Tyson often points out this fact. So some good can come from religion. Sometimes, at least.

[Bored chemist]

in the Middle Ages, it couldn't be separated from it. So things like the Renaissance and Age of Enlightenment were bound to religion, couldn't be avoided. Consider Deism, for example, because atheism at the time would just be impossible, or at least unheard of.

Guess again.
https://en.wikipedia.org/wiki/History_of_atheism#The_Middle_Ages

And you know the Gregorian Calendar reform was instituted by Pope Gregory XIII in 1582. And is the model of scientific perfection. Even Neil DeGrasse Tyson often points out this fact. So some good can come from religion.

That didn't "come from religion".
It came from clever people who were in a position to get nice easy jobs working with the government of the day (which happened to be the church) and they did some research and looking at how to get the calendar to tally with the stars and moon.
They did not do it because of religion.
Religion was, at the time, busy persecuting people like Galileo for telling the truth about exactly the same data set.
Progress was made in spite of religion.

As for "And is the model of scientific perfection"
No.
It's still wrong by about 1 day in 8000 years