Save 10%: Yosemite National Park Day Tour by Viator Save 10%: Yosemite National Park Day Tour by Viator – Save 10%: Yosemite National Park Day Tour. Deal Start Date: 11/21/2014 Deal Expires: 01/13/2015 Last Updated: Fri, 21 Nov 2014 14:09:04 GMT Keywords: San Francisco, Day Trips, Yosemite Other Deals Like Save 10%: Yosemite National Park Day Tour by Viator: