Willemstad to MDT Time Converter

Updating current time…
Willemstad
CuracaoAST
UTC−4
12am
3am
6am
9am
12pm
3pm
6pm
9pm
MDT
Mountain Daylight Time
UTC−6
2h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

8:00 am08:00 AST (UTC-4), Oct 30, 2026 = 6:00 am06:00 MDT (UTC-6), Oct 30, 2026

Willemstad is 2 hours ahead of MDT.

How the time difference changes

For most of the year, Willemstad is 2 hours ahead of MDT. From Nov 1, 2026 to Mar 14, 2027, Willemstad is 3 hours ahead of MST.

For most of the year, working hours of 9:00 am to 6:00 pm in Willemstad correspond to 7:00 am to 4:00 pm in MDT. At other times of the year, working hours of 9:00 am to 6:00 pm in Willemstad correspond to 6:00 am to 3:00 pm in MST.For most of the year, working hours of 09:00 to 18:00 in Willemstad correspond to 07:00 to 16:00 in MDT. At other times of the year, working hours of 09:00 to 18:00 in Willemstad correspond to 06:00 to 15:00 in MST.

Compare Willemstad time with MDT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

AST (Atlantic Standard Time) is 2 hours ahead of Mountain Daylight Time.
8:00 am08:00 in Willemstad, Curacao is 6:00 am06:00 in MDT

Willemstad to MDT call time
Best time for a conference call or a meeting is between 11am-6pm11:00-18:00 in Willemstad which corresponds to 9am-4pm09:00-16:00 in MDT

8:00 am08:00 AST (Atlantic Standard Time) (Willemstad, Curacao). Offset UTC -4:00 hours
6:00 am06:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours

8:00 am08:00 Willemstad, Curacao / 6:00 am06:00 MDT

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
Willemstad, CuracaoMDT
10:00pm previous day
11:00pm previous day
12:00am
1:00am
2:00am
3:00am
4:00am
5:00am
6:00am
7:00am
8:00am
9:00am
10:00am
11:00am
12:00pm
1:00pm
2:00pm
3:00pm
4:00pm
5:00pm
6:00pm
7:00pm
8:00pm
9:00pm
22:00 previous day
23:00 previous day
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00

Willemstad Time Zone and Facts

Time Zone

Abbreviation / Offset
AST – Atlantic Standard Time, UTC-4 (no daylight saving time)

Willemstad Facts

Country
Curacao
Alternative Names
Vilemstad, Vilemstadas, Vilemstade, Vilemstado, Villemstad, Villemstant, Villemştad, Willemstad, Willemsted, Willemstêd, billemseutateu, u~iremusutatto, vilemastada, villemstatu, wei lian si ta de, willems tad, wylmstad, Βίλλεμσταντ, Вилемстад, Виллемстад, Вілемстад, Віллемстад, וילמסטאד, ويلمستاد, ویلمستاد, ویلمسٹیڈ, विलेमश्टाड, வில்லெம்ஸ்டாடு, วิลเลมสตัด, ვილემსტადი, ウィレムスタット, 威廉斯塔德, 빌렘스타트
Population
125,000
Currency
Guilder (XCG)
Geographic Coordinates
12° 06' N Latitude / 68° 56' W Longitude
International Dialing Code
+599
More About Willemstad
Willemstad local time and city facts

Mountain Daylight Time

Offset: MDT is 6 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Canada, Mexico, United States

Principal Cities: The largest city in the MDT time zone is Ciudad Juárez in Mexico, with about 1.512 million people. Other major cities in this time zone include Denver, El Paso, Albuquerque, Colorado Springs.

French: HAR - Heure Avancée des Rocheuses

Spanish: MT - Zona Pacífico

Map of the areas on Mountain Daylight Time (MDT)
MDT part of the year

Today all shaded areas are on MDT.

Open the world time zone map© OpenStreetMap

Daylight Saving: Mountain Daylight Time (MDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Mountain Standard Time (MST).

123456789101112Start: Mountain Daylight Time (MDT) started on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

123456789101112End: Mountain Daylight Time (MDT) ends on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See USA daylight saving time and upcoming clock changes worldwide.

MDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -06 - basic short
  • -0600 - basic
  • -06:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0600 - sign character (-) followed by a four digit time providing hours (06) and minutes (00) of the offset. Indicates an offset of six hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Sierra - Military abbreviation for MDT
  • S - short form of 'Sierra'
IANA/Olson: Reflects MDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Boise
  • America/Cambridge_Bay
  • America/Ciudad_Juarez
  • America/Denver
  • America/Edmonton
  • America/Inuvik
  • America/Shiprock
  • America/Yellowknife
  • Canada/Mountain
  • MST7MDT
  • Navajo
  • US/Mountain
Time zones with the GMT -6 offset:
  • CST - Central Standard Time
  • CT - Central Time
  • MDT - Mountain Daylight Time
  • EAST - Easter Island Standard Time
  • GALT - Galapagos Time
  • S - Sierra Time Zone