Our cruise gets into Sibenik Croatia at noon, but stays later into the evening. We signed up for an excursion to the town of Skradin and the Skradinski Buk waterfalls in the Kryka national park. We won't return till 4:45. Our other option is just doing a town walking tour in Sibenik and then stay there on our own
It seems we'll have some time after the excursion but it will be 5pm and it'll be Oct 6th, so only a couple more hours of ligt.