First may I say an enormous thank you to everyone who has replied to my original post. I have been trying to keep up on my phone, but it's not the best device for viewing this board. As my PC has been commandeered for a "Covid rule relaxation working from home visitor", I can only seem to get access at unearthly hours to make a meaningful reply
Forgive me for seeming not quite on top of all this, but have we actually reached a consensus as to what these planetary symbols actually mean? A day of the week, or an hour of the day? Is it, perhaps, an idea to seek advice from elsewhere, and any ideas where to ask? I will go back through the posts and follow the suggestions made to see if I can make sense of the original scribe was doing, but being a bear of little brain, the prospect is a little daunting and not guaranteed to be a success

The reason for the post was that I am trying to re-construct a family that lived in Adel in the late 1600s and early 1700s - I have a post asking for help with this on the Yorkshire board - and in starting to cross-reference baptism records from various sources came across the 1702 Adel baptism page, sparking off my interest in this unusual parish register entry. In writing up my results I will certainly need to exercise some care in citations as I hadn't made the distinction between the Borthwick Institute and the West Yorkshire Archive Service and the difference in the records they hold. I will certainly need to add a new appendix taking a more detailed look at these particular PR pages.