According to Recreation.gov Website:
“Important Information regarding the Nov. 15 sale of camping reservations at Yosemite National Park: The Nov. 15, 2010 on-sale will be postponed until Dec. 15. This change is required as we schedule and conduct road construction projects that are slated for the spring of 2011. Reservations for Yosemite Valley Campgrounds with an arrival date of March 15 to May 14, 2011 will be available on Dec. 15, 2010 at 10 a.m. Eastern (7 a.m. Pacific).”
