Shanghai Sainte-MarieTime Converter

Shanghai (GMT+8, UTC+8) is currently 12 hours ahead of Sainte-Marie (AST, UTC−4). Compare live clocks, convert any hour, and find times to meet.

Live DST-aware Shareable URLs
 
--:--:--

Quick answer

When it's in Shanghai, it's the previous day in Sainte-Marie.

Shanghai (GMT+8) runs 12 hours ahead of Sainte-Marie (AST). A 9-to-5 workday on one side lands in the other side's evening or night, so the two cities share almost no normal working hours — edge-of-day calls are the trick.

Time difference
−12h 00m
Shanghai
UTC+8
Sainte-Marie
UTC−4
Best call window
Outside 9–6
Hour by hour

Shanghai to Sainte-Marie conversion table

The next 12 hours in Shanghai and the matching local time in Sainte-Marie. The current hour is highlighted; drag the converter's slider and the table follows.

Hourly conversion from Shanghai to Sainte-Marie
Shanghai · GMT+8 Sainte-Marie · AST Sainte-Marie status
NOW
Sun, Jul 26
Sun, Jul 26
Day
Sun, Jul 26
Sun, Jul 26
Day
Sun, Jul 26
Sun, Jul 26
Day
Sun, Jul 26
Sun, Jul 26
DayWorking hours
Sun, Jul 26
Sun, Jul 26
DayWorking hours
Sun, Jul 26
Sun, Jul 26
DayWorking hours
Mon, Jul 27
Sun, Jul 26
DayWorking hours
Mon, Jul 27
Sun, Jul 26
DayWorking hours
Mon, Jul 27
Sun, Jul 26
DayWorking hours
Mon, Jul 27
Sun, Jul 26
DayWorking hours
Mon, Jul 27
Sun, Jul 26
DayWorking hours
Mon, Jul 27
Sun, Jul 26
DayWorking hours
Meeting planner

Best time to meet between Shanghai & Sainte-Marie

Working hours are 9am–6pm in each city. The bright band is where they overlap: both sides at their desks.

Shanghai GMT+8
Sainte-Marie AST
Both in working hours Working hours (9–18) Early morning or evening Very early or very late Night Now
Business hours (9:00 AM – 6:00 PM) in Shanghai and Sainte-Marie do not overlap. When it is 9:00 AM in Shanghai, it is already 9:00 PM the previous day in Sainte-Marie — schedule around early mornings or late evenings instead.
Good to know

This time difference never changes

Neither side observes daylight saving against the other, so the gap stays constant all year. Shanghai does not observe daylight saving time. Sainte-Marie does not observe daylight saving time. This page always shows the live, DST-aware difference.

Built for humans and machines

One source of truth, for you and your AI

This page exposes the same answer as structured data, so when you ask an assistant "what's 9am Shanghai time in Sainte-Marie?", it can cite the exact, DST-aware result, not a stale blog post.

  • Schema.org JSON-LD on every converter page
  • A machine-readable facts island with time zone identifiers and every possible offset
  • Live times in <time datetime> elements with explicit UTC offsets
JSON #timezone-pair-data · embedded in this page
{
  "pair": "Shanghai → Sainte-Marie",
  "url": "https://worldclock.pro/en/convert/shanghai-to-sainte-marie-mq",
  "from": {
    "name": "Shanghai",
    "type": "city",
    "abbreviation": "GMT+8",
    "daylightAbbreviation": null,
    "iana": "Asia/Shanghai",
    "standardUtcOffset": "+08:00",
    "daylightUtcOffset": null,
    "referenceCity": "Shanghai"
  },
  "to": {
    "name": "Sainte-Marie",
    "type": "city",
    "abbreviation": "AST",
    "daylightAbbreviation": null,
    "iana": "America/Martinique",
    "standardUtcOffset": "-04:00",
    "daylightUtcOffset": null,
    "referenceCity": "Sainte-Marie"
  },
  "currentDifferenceMinutes": -720,
  "possibleDifferencesMinutes": [
    -720
  ],
  "note": "The difference is constant year-round."
}

Frequently asked questions

What is the time difference between Shanghai and Sainte-Marie?

Shanghai is currently 12 hours ahead of Sainte-Marie. Shanghai is on GMT+8 (UTC+8) and Sainte-Marie is on AST (UTC−4). The difference can change when either side starts or ends daylight saving time.

Is Sainte-Marie ahead of or behind Shanghai?

Sainte-Marie is currently 12 hours behind Shanghai.

When it is 9:00 AM in Shanghai, what time is it in Sainte-Marie?

When it is 9:00 AM on a Sunday in Shanghai, it is 9:00 PM the previous day in Sainte-Marie.

Do Shanghai and Sainte-Marie observe daylight saving time?

Shanghai does not observe daylight saving time. Sainte-Marie does not observe daylight saving time.

How do I convert Shanghai time to Sainte-Marie time?

Subtract 12 hours from any time in Shanghai to get the time in Sainte-Marie. This page's converter and 24-hour table do it automatically and stay correct through daylight-saving changes.

More world clock & time zone apps

From the team behind worldclock.pro: global scheduling on iPhone & iPad, a Mac menu-bar clock, and precision Zulu/UTC for aviation, military, and HAM radio.

iPhone & iPad World Clock Master icon

World Clock Master

★★★★★4.7

Global time zone scheduling for international teams, travelers, and professionals who coordinate across cities and continents.

View app
macOS World Clock Pro Mac icon

World Clock Pro

★★★★★4.3

The same powerful time zone converter, meeting scheduler, and world clock, living in your Mac's menu bar.

View app
iPhone Zulu Time app icon

Zulu Time

★★★★★4.8

Precision UTC for pilots, military, and HAM radio: NTP-synced atomic accuracy, NATO time-zone letters, and an interactive world map.

View app