Daylight Saving Time used for Mountain Standard Time (MST), for details check here. Newfoundland Standard Time period is over, currently Newfoundland Daylight Time is observed!
NST and MST Time Calculator
• Newfoundland Daylight Time Offset: UTC/GMT -2.5
• Mountain Daylight Time Offset: UTC/GMT -6
» Newfoundland Standard Time Conversions
» Mountain Standard Time Conversions