Like most other astronomical calculations, eclipse predictions are usually presented in terms of Universal Time. In order to convert eclipse predictions from UT to local time, you need to know what time zone you are in.
For North Americans on August 2017 (Daylight Saving Time), the conversion from UT to local time is as follows :
Atlantic Daylight Time (ADT) = UT - 3 hours Eastern Daylight Time (EDT) = UT - 4 hours Central Daylight Time (CDT) = UT - 5 hours Mountain Daylight Time (MDT) = UT - 6 hours Pacific Daylight Time (PDT) = UT - 7 hours
For example, let's assume that an eclipse begins in Dubois, Idaho on August 21 at 17:32 UT. Dubois is in the Moutain Daylight Time zone, so:
Local Time = 17:32 - 6 hours = 11:32 (= 11:32 am)
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