Nature Worship.
When ever we come to look at pagan pasts, we find that whatever order of priests there where they all worked out a astronimical clock in their stone circle monuments.
So if you are off the New Grange or Stone Henge or any other monument, please be re-assured that time and cycles remain very much in God the Creators control.
Psalm 115:5-8, Romans 1:18-23, Revelation 9:20-21.