This is why there is an official priest in the Catholic church who is an astronomer. Churches had lines inscribed on the floor showing where a spot of sunlight

This is why there is an official priest in the Catholic church who is an astronomer. Churches had lines inscribed on the floor showing where a spot of sunlight would be on noon of the Spring equinox: http://www.atlasobscura.com/articles/catholics-built-secret-astronomical-features-into-churches-to-help-save-souls http://www.atlasobscura.com/articles/catholics-built-secret-...