The short answer
10am in India Standard Time is 5:30am in Greenwich Mean Time.
India Standard Time is 4 hours 30 minutes ahead of Greenwich Mean Time. It lands deep outside working hours in Greenwich Mean Time — see the best time to meet below for a friendlier slot.
India Standard Time☀
10am
Greenwich Mean Time☀
5:30am
Right now
12pmIST · UTC+05:30 · Thu, Jun 11
7:30amBST · UTC+01:00 · Thu, Jun 11
Read across to convert
India Standard Time
IST · UTC+05:30
Greenwich Mean Time
BST · UTC+01:00
Pinned10amIndia Standard Time=5:30amGreenwich Mean Time
12amThu
7:30pmWed ·−1d
1am
8:30pmWed ·−1d
2am
9:30pmWed ·−1d
3am
10:30pmWed ·−1d
4am
11:30pmWed ·−1d
5am
12:30amThu
6am
1:30am
7am
2:30am
8am
3:30am
9am
WORK4:30am
PINNED
10am
WORK5:30am
11am
WORK6:30am
NOW
12pm
WORK7:30am
1pm
WORK8:30am
2pm
WORK9:30am
WORK3pm
WORK10:30am
WORK4pm
WORK11:30am
WORK5pm
12:30pm
WORK6pm
1:30pm
WORK7pm
2:30pm
WORK8pm
3:30pm
WORK9pm
4:30pm
WORK10pm
5:30pm
11pm
6:30pm
daylightnightworking hoursoverlap
Best time to meet=
Best for a call
India Standard Time
2pm–5pm
Greenwich Mean Time
9:30am–12:30pm
Popular conversions
Quick reference.
9amIndia Standard Time=4:30amGreenwich Mean Time
12pmIndia Standard Time=7:30amGreenwich Mean Time
3pmIndia Standard Time=10:30amGreenwich Mean Time
5pmIndia Standard Time=12:30pmGreenwich Mean Time
9pmIndia Standard Time=4:30pmGreenwich Mean Time
In context
What each side covers.
India Standard Time
12pmIST · UTC+05:30
Greenwich Mean Time
7:30amBST · UTC+01:00
Cities on this clock
Did you mean…? “IST” is shared by several places. This page shows India Standard Time (India) — or switch to Israel Standard Time · Irish Standard Time.
Related converters
Other popular pairs.
Pacific Time
11:30pm
India Standard Time
12pm
Pacific Time to India12 hours 30 minutes behind
Eastern Standard Time
2:30am
Central European Time
8:30am
Eastern Time to Central Europe6 hours behind
India Standard Time
12pm
Eastern Standard Time
2:30am
India to Eastern Time9 hours 30 minutes ahead
Greenwich Mean Time
7:30am
India Standard Time
12pm
London to India4 hours 30 minutes behind
Pacific Standard Time
11:30pm
Eastern Standard Time
2:30am
Pacific to Eastern Time3 hours behind
Central European Time
8:30am
India Standard Time
12pm
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between India Standard Time and Greenwich Mean Time. Can't find what you need? Email [email protected].
- What is the time difference between India Standard Time and Greenwich Mean Time?
- India Standard Time is 4 hours 30 minutes ahead of Greenwich Mean Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
- When it's 10am in India Standard Time, what time is it in Greenwich Mean Time?
- 10am in India Standard Time is 5:30am in Greenwich Mean Time. It lands deep outside working hours in Greenwich Mean Time — see the best time to meet below for a friendlier slot. Use the hour-by-hour table above to read any other time across.
- What's the best time for a call between India Standard Time and Greenwich Mean Time?
- 2pm–5pm in India Standard Time lines up with 9:30am–12:30pm in Greenwich Mean Time — both sides are inside a 9-to-5 working day.
- Does this account for daylight saving time?
- Yes. We track every clock change in both places, so the abbreviations you see — IST and BST — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
- Why is the date sometimes different on each side?
- When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.