IST to GST

Conversion table

Common times in IST and their equivalents in GST:

Table computed using a fixed reference date to keep output stable. Use the full converter for any date and time.

Common meeting times

Quick translations for typical business hours in India Standard Time:

• 9:00 AM IST→7:30 AM GST
• 12:00 PM IST→10:30 AM GST
• 3:00 PM IST→1:30 PM GST
• 5:00 PM IST→3:30 PM GST

Best time to schedule a call

The ideal window where both IST and GST are inside business hours (08:00–18:00) is 9:30 AM–6:00 PM IST, which is 8:00 AM–4:30 PM GST.

Sample calendar invite

Copy-paste this into your calendar event so attendees see both zones spelled out.

Subject: Sync meeting
Time: 10:00 AM IST (India Standard Time) = 8:30 AM GST (Gulf Standard Time)
Date: Thursday, 15 January 2026
Notes: India Standard Time ↔ Gulf Standard Time conversion handled with DST applied automatically.

About India Standard Time and Gulf Standard Time

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Frequently asked questions

What time is it in Gulf Standard Time when it's noon in India Standard Time?

When it's 12:00 PM IST, it's 10:30 AM GST.

What's the best time to schedule a call between IST and GST?

Business-hour overlap (08:00–18:00 in both zones) lands at 9:30 AM–6:00 PM IST, which is 8:00 AM–4:30 PM GST. Schedule inside that window for both sides to be in their working day.

Does the time difference between IST and GST change during the year?

No — neither zone observes DST in a way that changes this pair, so the offset is stable year-round.

Does this converter handle daylight saving time?

Yes. All calculations use the IANA time zone database (via Luxon), so DST transitions for both India Standard Time and Gulf Standard Time are applied automatically.