Table of Approximate Local Monthly Sunrise and Sunset Times in the USA at North Latitude 46 19 15, West Longitude 111 30 56, Townsend, Montana. All times are given in Mountain Daylight Time (MDT). Monthly Local Sunrise Times May 6:00 June 5:30 July 5:45 August 6:30 September 7:00 Twilight can begin an hour earlier. Monthly Local Sunset Times May 8:45 June 9:15 July 9:15 August 8:30 September 7:45 Twilight can extend an hour later. [End of File]