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20180921

-              v1
+              v2
 Graduate Student
+"Clocks of the Universe"
+Clocks of the Universe
+Abstract TBA
+Observing the night sky, we can notice many periodic motions that can help us keep track of time. Quantities such as the day and the year can be defined in ways which slightly differ from one another. I will talk about the reasons for these differences and their effects. I'll also talk about how some of the calendars we use try to incorporate them.