I love the fact that the lore puts some stuff like the one in OB that you must wait certain days of months to see that lunar ray falling in the altar, will it be new stuff like that? its awesome to see it actually in the game, it fels so mystical and lore-realistic.

I'm really interested in astronomy and physics so I really want to learn more about nirns moons and surrounding planets but also the effects it has

I want to see new rules conditionalized for all players during special ceremonial days where planets and stars align causing some kind of magic alteration to the very system. Magic could suddenly become more powerful on those days, or have devastating magical side effects you can't predict. Or maybe you can't recharge your magicka the normal way, but only in the Atronach way for one day. Or maybe potions can't work on that day because the strange forces wreak havoc on their chemical nature.

I would love to see gates or portals open on those days from other worlds (a touch of Oblivion but not to that plane, to other worlds, where if you go into the gate you enter a new universe inside the Tamriel lore with unique graphics and a single quest that must be solved that day or else you cannot ever complete it for the reward. Or maybe strange, unique monsters spawn out of those gates for just that one day, doing unusual and bizarre things, or summoning hordes of monsters to attack the Nordic armies.

I think we should be excited and yet fear the coming of those days, and you should know they are coming because people have been talking about it a lot in the days leading up to them. Gossip and town conversations.

I haven't seen any info on birthsigns yet though.

But I do recall the menu system for skills and perks will be a bit interactive and may have a play at this possibly.
Showing the constellations and birth signs and perks as stars.

I loved that moment in the Morrowind MQ were you have to wait for a sunrise to open Azura's Cave (?), that was a cool magical Indiana Jones moment.