In the past I’ve provided a custom OUTLOOK.HOL file to add the UW Holidays to Outlook and via Outlook to your Exchange calendar.
You can read http://blogs.uw.edu/barkills/2008/11/06/uw-holidays-in-exchange-2/ for the first post where I mentioned this mechanism.
I’ve just updated the Outlook.hol file noted in that post to include the UW Holidays from 2014 thru 2023. Yeah, I got tired of doing this every year or two so I went for 10 years this time around. The link to that file is on the left … i.e. http://staff.washington.edu/barkills/OUTLOOK.HOL.
Note that this newly updated OUTLOOK.HOL file is based on the stock Outlook file with UW Holidays from 2012 & 2013 and then UW Holidays 2014-2023 added. You’ll be closing Outlook, replacing the stock file at C:\Program Files (x86)\Microsoft Office\Office14\1033 with this new copy (to be safe, make a copy of your stock file first), then via the File toolbar, Options, Calendar, Add Holidays…, Uncheck United States and Check UW Holidays 2014-2023.
If you are running Outlook 2013, adjust the file location as needed.