Conditions permitting, Ostrander Ski Hut will be open Friday, December 22, 2017 to Saturday, March 31, 2018. There is no longer a preseason lottery. Reservations are now booked live online first-come, first-serve. This year the reservation season will open on Tuesday, November 14, 2017 at 10:00 am. Look for the “Book Now” button at https://www.yosemiteconservancy.org/facilities-reservation /