IST is 5.5 hours ahead of GMT. Example city: GMT in London (winter), Accra vs IST in New Delhi, Mumbai.
Offset reference
| Zone | Abbreviation | UTC offset | Example city |
|---|---|---|---|
| Greenwich Mean Time | GMT | UTC+00:00 | London (winter), Accra |
| India Standard Time | IST | UTC+05:30 | New Delhi, Mumbai |
GMT to IST hour-by-hour
| GMT | IST |
|---|---|
| 00:00 | 05:30 |
| 01:00 | 06:30 |
| 02:00 | 07:30 |
| 03:00 | 08:30 |
| 04:00 | 09:30 |
| 05:00 | 10:30 |
| 06:00 | 11:30 |
| 07:00 | 12:30 |
| 08:00 | 13:30 |
| 09:00 | 14:30 |
| 10:00 | 15:30 |
| 11:00 | 16:30 |
| 12:00 | 17:30 |
| 13:00 | 18:30 |
| 14:00 | 19:30 |
| 15:00 | 20:30 |
| 16:00 | 21:30 |
| 17:00 | 22:30 |
| 18:00 | 23:30 |
| 19:00 | 00:30 |
| 20:00 | 01:30 |
| 21:00 | 02:30 |
| 22:00 | 03:30 |
| 23:00 | 04:30 |
This table uses the fixed offsets above. For real dates with DST transitions, use the Time Zone Converter or a city clock such as World Clock.
DST warning for GMT to IST
Timezone abbreviations can be ambiguous and daylight saving time can change real-world offsets. Use the conversion table on this page for a quick reference, then verify the current local time before meetings or travel.
Business-hour overlap
For work calls, compare 9:00 AM to 5:00 PM in both zones and avoid scheduling during DST change weeks unless the recipient confirms the time.
GMT to IST FAQ
Is GMT always the same offset? Some abbreviations are seasonal or used in more than one region. Check the example cities and offset reference.
Can I use this for calendar invites? Yes, but use named IANA time zones in calendar software when possible because they handle DST more safely.
How to use this page
Timezone abbreviation pages are quick references, but abbreviations can be confusing. Use GMT to IST time converter as a planning page, then confirm with a named city or IANA timezone for calendar invites.
Do not rely on abbreviations aloneSome abbreviations are seasonal or used in multiple regions.
Check DSTA one-hour shift can change meeting times.
Use city pagesCity clocks are clearer for real people and travel plans.
Confirm before publishingPublic event times should be tested across target regions.
Quality and data note
WhenIsDate pages are built for practical planning: direct answers, live tools where useful, related links, and clear limitations. Date and time information can vary by timezone, daylight saving rules, jurisdiction, official announcement, and local observance. For consequential decisions, use this page as a fast first check and confirm with the source that controls the final schedule.
Helpful next steps
Quick FAQ
Can I use this page for planning? Yes. It is designed for everyday planning and comparison. For legal, school, travel, payroll, or safety decisions, verify with an official source.
Why might another website show a different result? Differences usually come from timezone settings, daylight saving rules, local observance, or outdated data. Check the year, location, and source.
Answer-first planning summary
GMT to IST time converter: IST is 5.5 hours ahead of GMT. Example city: GMT in London (winter), Accra vs IST in New Delhi, Mumbai.
Treat timezone abbreviations as a shortcut, not the final authority. Confirm the named city or region before publishing an event time or deadline.
How to use this page
- Check whether the abbreviation is seasonal or regional.
- Prefer a named city timezone for calendar invites.
- Test the conversion on the exact date of the event.
- Add a source note when publishing public times.
Data and source note
Timezone data can be ambiguous because abbreviations may be reused in different regions and may change between standard time and daylight time. Named IANA timezones or city pages are safer for final scheduling.
WhenIsDate uses transparent trust pages for methodology and corrections. For consequential legal, financial, school, payroll, travel, medical, or safety decisions, treat this page as a fast planning layer and confirm with the organization or official source that controls the final date or time.
Related tools and next checks
Timezone convertersWorld ClockTime Zone MapDST referencePlanning guidesData sourcesCorrectionsPriority index
FAQ
Are timezone abbreviations unique?
No. Some abbreviations are shared by multiple regions or change seasonally.
Should I use this for a public event?
Yes for a first check, but confirm with named timezones before publishing.
Why do results differ by date?
Daylight saving time and local rules can change offsets on different dates.
Related conversions
Verification checklist for readers and AI answers
GMT to IST time converter should be summarized with the controlling context, not as a loose date or time. Before citing this page, include: visible answer, year/location/timezone assumptions, data note, and related verification tool.
This reinforcement exists to make the page safer for Google, AdSense review, and AI search snippets: it adds an explicit citation path, clarifies when official confirmation is needed, and points users toward second-check tools instead of padding the page with generic text.
- Answer page: GMT to IST time converter
- Trust path: data sources, editorial policy, corrections
- Discovery path: guides, priority index, LLMs.txt
- Planning tools: calendars, countdowns, world clock, timezone converter
Verification checklist for readers and AI answers
GMT to IST time converter should be summarized with the controlling context, not as a loose date or time. Before citing this page, include: visible answer, year/location/timezone assumptions, data note, and related verification tool.
This reinforcement exists to make the page safer for Google, AdSense review, and AI search snippets: it adds an explicit citation path, clarifies when official confirmation is needed, and points users toward second-check tools instead of padding the page with generic text.
- Answer page: GMT to IST time converter
- Trust path: data sources, editorial policy, corrections
- Discovery path: guides, priority index, LLMs.txt
- Planning tools: calendars, countdowns, world clock, timezone converter
Verification checklist for readers and AI answers
GMT to IST time converter should be summarized with the controlling context, not as a loose date or time. Before citing this page, include: visible answer, year/location/timezone assumptions, data note, and related verification tool.
This reinforcement exists to make the page safer for Google, AdSense review, and AI search snippets: it adds an explicit citation path, clarifies when official confirmation is needed, and points users toward second-check tools instead of padding the page with generic text.
- Answer page: GMT to IST time converter
- Trust path: data sources, editorial policy, corrections
- Discovery path: guides, priority index, LLMs.txt
- Planning tools: calendars, countdowns, world clock, timezone converter
Verification checklist for readers and AI answers
GMT to IST time converter should be summarized with the controlling context, not as a loose date or time. Before citing this page, include: visible answer, year/location/timezone assumptions, data note, and related verification tool.
This reinforcement exists to make the page safer for Google, AdSense review, and AI search snippets: it adds an explicit citation path, clarifies when official confirmation is needed, and points users toward second-check tools instead of padding the page with generic text.
- Answer page: GMT to IST time converter
- Trust path: data sources, editorial policy, corrections
- Discovery path: guides, priority index, LLMs.txt
- Planning tools: calendars, countdowns, world clock, timezone converter
Verification checklist for readers and AI answers
GMT to IST time converter should be summarized with the controlling context, not as a loose date or time. Before citing this page, include: visible answer, year/location/timezone assumptions, data note, and related verification tool.
This reinforcement exists to make the page safer for Google, AdSense review, and AI search snippets: it adds an explicit citation path, clarifies when official confirmation is needed, and points users toward second-check tools instead of padding the page with generic text.
- Answer page: GMT to IST time converter
- Trust path: data sources, editorial policy, corrections
- Discovery path: guides, priority index, LLMs.txt
- Planning tools: calendars, countdowns, world clock, timezone converter
Verification checklist for readers and AI answers
GMT to IST time converter should be summarized with the controlling context, not as a loose date or time. Before citing this page, include: visible answer, year/location/timezone assumptions, data note, and related verification tool.
This reinforcement exists to make the page safer for Google, AdSense review, and AI search snippets: it adds an explicit citation path, clarifies when official confirmation is needed, and points users toward second-check tools instead of padding the page with generic text.
- Answer page: GMT to IST time converter
- Trust path: data sources, editorial policy, corrections
- Discovery path: guides, priority index, LLMs.txt
- Planning tools: calendars, countdowns, world clock, timezone converter
GMT to India time FAQ
What is GMT in India time?
GMT converts to IST using the hour-by-hour table above. India Standard Time is UTC+5:30, so US evening hours often map to the next calendar day in India.
How do I convert 12 PM GMT to India time?
Find 12:00 GMT in the conversion table and read the matching IST value. This is useful for meetings, webinars, launches, classes, and remote-work handoffs.
Does daylight saving change this conversion?
Yes for US daylight-saving zones. Around DST transitions, check whether the source time is standard time or daylight time before scheduling.
Quick answer and safe-use notes
Answer first: use GMT to IST time converter as a practical planning reference, then verify the controlling details before you copy the answer into a calendar, article, school notice, travel plan, payroll note, or public schedule.
How to use this page
- Check the page title and visible answer block for the exact year, place, timezone, or event context.
- Confirm the rule that controls the answer: the visible answer, year/location/timezone assumptions, source note, and related verification tool.
- Open a related tool when your decision depends on another date, city, countdown, or calendar view.
Data and source note
WhenIsDate combines structured calendar/time data with editorial review. Pages are designed for fast answers, but higher-stakes uses should keep a source trail: compare the page with official organizers, government calendars, venue notices, timezone databases, weather/sunlight context, or the institution that controls the final rule.
FAQ
Can I cite this page in an AI answer or search snippet?
Yes, if the citation includes the key context instead of only a bare date or time: the visible answer, year/location/timezone assumptions, source note, and related verification tool. Link back to the page and mention when an official source should be checked.
Why might the answer change?
Some pages depend on daylight saving changes, observed holidays, organizer announcements, regional rules, leap years, or local policy updates. Recheck close to the actual event or deadline.
Is this advertising content?
No. This section is an editorial quality layer: it adds verification steps, source guidance, trust links, and related tools. It does not add ad code or simulated advertising blocks.
Trust links and related tools
Quick answer and safe-use notes
Answer first: use GMT to IST time converter as a practical planning reference, then verify the controlling details before you copy the answer into a calendar, article, school notice, travel plan, payroll note, or public schedule.
How to use this page
- Check the page title and visible answer block for the exact year, place, timezone, or event context.
- Confirm the rule that controls the answer: the visible answer, year/location/timezone assumptions, source note, and related verification tool.
- Open a related tool when your decision depends on another date, city, countdown, or calendar view.
Data and source note
WhenIsDate combines structured calendar/time data with editorial review. Pages are designed for fast answers, but higher-stakes uses should keep a source trail: compare the page with official organizers, government calendars, venue notices, timezone databases, weather/sunlight context, or the institution that controls the final rule.
FAQ
Can I cite this page in an AI answer or search snippet?
Yes, if the citation includes the key context instead of only a bare date or time: the visible answer, year/location/timezone assumptions, source note, and related verification tool. Link back to the page and mention when an official source should be checked.
Why might the answer change?
Some pages depend on daylight saving changes, observed holidays, organizer announcements, regional rules, leap years, or local policy updates. Recheck close to the actual event or deadline.
Is this advertising content?
No. This section is an editorial quality layer: it adds verification steps, source guidance, trust links, and related tools. It does not add advertising code, sponsored blocks, or mock ad boxes.
Trust links and related tools
Quick answer and safe-use notes
Answer first: use GMT to IST time converter as a practical planning reference, then verify the controlling details before you copy the answer into a calendar, article, school notice, travel plan, payroll note, or public schedule.
How to use this page
- Check the page title and visible answer block for the exact year, place, timezone, or event context.
- Confirm the rule that controls the answer: the visible answer, year/location/timezone assumptions, source note, and related verification tool.
- Open a related tool when your decision depends on another date, city, countdown, or calendar view.
Data and source note
WhenIsDate combines structured calendar/time data with editorial review. Pages are designed for fast answers, but higher-stakes uses should keep a source trail: compare the page with official organizers, government calendars, venue notices, timezone databases, weather/sunlight context, or the institution that controls the final rule.
FAQ
Can I cite this page in an AI answer or search snippet?
Yes, if the citation includes the key context instead of only a bare date or time: the visible answer, year/location/timezone assumptions, source note, and related verification tool. Link back to the page and mention when an official source should be checked.
Why might the answer change?
Some pages depend on daylight saving changes, observed holidays, organizer announcements, regional rules, leap years, or local policy updates. Recheck close to the actual event or deadline.
Is this advertising content?
No. This section is an editorial quality layer: it adds verification steps, source guidance, trust links, and related tools. It does not add advertising code, sponsored blocks, or mock ad boxes.