Castries MumbaiTime Converter
Castries (AST, UTC−4) is currently 9 hours 30 minutes behind Mumbai (IST, UTC+5:30). Compare live clocks, convert any hour, and find times to meet.
Best time to meet between Castries and Mumbai
Best meeting times:
Castries: 7:00 AM – 11:00 AM
Mumbai: 4:30 PM – 8:30 PM
Quick answer
When it's in Castries, it's the same day in Mumbai.
Castries (AST) runs 9 hours 30 minutes behind Mumbai (IST). 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
- +9h 30m
- Castries
- UTC−4
- Mumbai
- UTC+5:30
- Best call window
- Outside 9–6
Castries to Mumbai conversion table
The next 12 hours in Castries and the matching local time in Mumbai. The current hour is highlighted; drag the converter's slider and the table follows.
| Castries · AST | Mumbai · IST |
|---|---|
| NOW Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Thu, Aug 6 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
Fri, Aug 7 |
This time difference never changes
Neither side observes daylight saving against the other, so the gap stays constant all year. Castries does not observe daylight saving time. Mumbai does not observe daylight saving time. This page always shows the live, DST-aware difference.
Related time zone conversions
Jump straight to another pair: every combination is a live tool, not an article.
From Castries
To Mumbai
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 Castries time in Mumbai?", 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
{
"pair": "Castries → Mumbai",
"url": "https://worldclock.pro/en/convert/castries-to-mumbai",
"from": {
"name": "Castries",
"type": "city",
"abbreviation": "AST",
"daylightAbbreviation": null,
"iana": "America/St_Lucia",
"standardUtcOffset": "-04:00",
"daylightUtcOffset": null,
"referenceCity": "Castries"
},
"to": {
"name": "Mumbai",
"type": "city",
"abbreviation": "IST",
"daylightAbbreviation": null,
"iana": "Asia/Kolkata",
"standardUtcOffset": "+05:30",
"daylightUtcOffset": null,
"referenceCity": "Mumbai"
},
"currentDifferenceMinutes": 570,
"possibleDifferencesMinutes": [
570
],
"note": "The difference is constant year-round."
}
Frequently asked questions
What is the time difference between Castries and Mumbai?
Castries is currently 9 hours 30 minutes behind Mumbai. Castries is on AST (UTC−4) and Mumbai is on IST (UTC+5:30). The difference can change when either side starts or ends daylight saving time.
Is Mumbai ahead of or behind Castries?
Mumbai is currently 9 hours 30 minutes ahead of Castries.
When it is 9:00 AM in Castries, what time is it in Mumbai?
When it is 9:00 AM on a Thursday in Castries, it is 6:30 PM in Mumbai.
Do Castries and Mumbai observe daylight saving time?
Castries does not observe daylight saving time. Mumbai does not observe daylight saving time.
How do I convert Castries time to Mumbai time?
Add 9 hours 30 minutes to any time in Castries to get the time in Mumbai. This page's converter and 24-hour table do it automatically and stay correct through daylight-saving changes.
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