Convert Chile Standard Time to Mountain Daylight Time
Instantly convert Chile Standard Time (CLT) to Mountain Daylight Time (MDT) with our free online calculator.
Chile Standard Time
01:20:54 AM
Wed, Jun 24 (CLT)
Mountain Daylight Time
11:20:54 PM
Tue, Jun 23 (MDT)
Convert a Specific Time
24-Hour Comparison
| CLT | MDT |
|---|---|
| 12:00 AM | 10:00 PM(-1d) |
| 1:00 AM | 11:00 PM(-1d) |
| 2:00 AM | 12:00 AM |
| 3:00 AM | 1:00 AM |
| 4:00 AM | 2:00 AM |
| 5:00 AM | 3:00 AM |
| 6:00 AM | 4:00 AM |
| 7:00 AM | 5:00 AM |
| 8:00 AM | 6:00 AM |
| 9:00 AM | 7:00 AM |
| 10:00 AM | 8:00 AM |
| 11:00 AM | 9:00 AM |
| 12:00 PM | 10:00 AM |
| 1:00 PM | 11:00 AM |
| 2:00 PM | 12:00 PM |
| 3:00 PM | 1:00 PM |
| 4:00 PM | 2:00 PM |
| 5:00 PM | 3:00 PM |
| 6:00 PM | 4:00 PM |
| 7:00 PM | 5:00 PM |
| 8:00 PM | 6:00 PM |
| 9:00 PM | 7:00 PM |
| 10:00 PM | 8:00 PM |
| 11:00 PM | 9:00 PM |
How to Convert Chile Standard Time to Mountain Daylight Time
Formula
To convert Chile Standard Time (CLT) to Mountain Daylight Time (MDT): Convert CLT to MDT
About Chile Standard Time (CLT)
Chile Standard Time (CLT, IANA: America/Santiago) is the official civil time of most of Chile, set at UTC-4:00. CLT is observed during the Southern Hemisphere winter (April to September) and Chile switches to Chile Summer Time (CLST = UTC-3:00) during the Southern Hemisphere summer (September to April) per Decreto 1.444 of 2021. Chile's DST window is opposite the Northern Hemisphere DST window because the seasons are reversed. CLT serves approximately 19 million people across Chile's 16 regions. Major cities: Santiago de Chile (5.6M city, 7M metro — capital), Valparaíso (300K), Concepción (220K), Antofagasta (390K), Temuco (290K). The Easter Island (Isla de Pascua / Rapa Nui) territory in the South Pacific uses Easter Island Standard Time (EAST = UTC-6:00) separately, switching to EASST = UTC-5:00 in summer. Magallanes region in southern Chile stays on UTC-3:00 year-round (no DST). CLT affects: Santiago Stock Exchange BCS trading, Codelco copper-mining shift coordination, and ALMA Observatory astronomical-observation scheduling in the Atacama desert.
About Mountain Daylight Time (MDT)
Mountain Daylight Time (MDT, IANA: America/Denver during DST window) is the summer-time variant of MST, set at UTC-6:00 — observed from the second Sunday in March to the first Sunday in November per the Energy Policy Act of 2005. MDT shares the same UTC offset as Central Standard Time (CST), which can cause cross-time-zone scheduling confusion during the DST transition windows in March and November. The Navajo Nation in northeastern Arizona does observe MDT (unlike the rest of Arizona), creating one of the rare US sub-state time-zone exceptions per the Navajo Nation Council's 1968 resolution. MDT applies in Colorado, Utah, Wyoming, Montana, Idaho east, New Mexico, parts of Texas, and Canadian Rocky Mountain provinces (Alberta, eastern BC). Used in coordination of: Denver International Airport flight operations, ski-area lift hours during shoulder-season DST window, Yellowstone National Park ranger schedules, US National Renewable Energy Lab operations, and FAA Albuquerque ARTCC ATC operations.