A Vulcan lute on Aldea. The Vulcan lute (sometimes referred to as Vulcan harp, Vulcan lyre, or Vulcan Lyrette) was a twelve-stringed instrument, played on the planet Vulcan, that was tuned on a diatonic scale and noted to be very soothing.
Keystone Average Weather. 1  The highest monthly average temperature in Keystone for July is 54 degrees. 2  The lowest monthly average temperature in Keystone for December is 14 degrees.  The most monthly precipitation in Keystone occurs in January with 0 inches.
How long is a Keystone Exam administration?There is no time limit for a student to complete a Keystone Exam. Each Keystone Exam should take the typical student 2 to 3 hours to complete. There are two modules on each test, and each module (or Test Session) of the Keystone Exam should take 1 to 1.5 hours to complete.