Primary Last Day to Register Sheila · Jul 12, 2018 · Calendar When: July 12, 2018 @ 9:00 am – August 6, 2018 @ 5:00 pm America/Denver Timezone 2018-07-12T09:00:00-06:00 2018-08-06T17:00:00-06:00 Primary Last Day to Register 2018