So according to the srict reading of the text...the sun was NOT made on the 4th day
The moon was NOT made on the 4th day....and
The stars were NOT made on the 4th day.....



So all the struggling that the Young Earth teachers do to make that all happen on the 4th day is silly, and not needed in the slightest way.

The story works just fine as it appears, it does not need us to run around 'fixing' it with our additions.....