Does the converter account for daylight saving time?
The browser's IANA time-zone data is used, which normally applies date-specific daylight-saving rules.
Calculator Tools
Time Zone Converter & Meeting Planner
Convert exact times between IANA time zones, compare international participant locations, find working-hour overlap and export the selected meeting to your calendar.
Time zone converter & meeting planner
Convert an exact wall-clock time, compare participant locations, and find practical meeting slots that fit shared working hours.
Source time
🇮🇳 India
Asia/Kolkata · GMT+05:30
Sep 18, 2026, 5:36 PM
Friday, September 18, 2026 at 5:36:00 PM GMT+5:30
Converted time
🇺🇸 United States - New York
America/New_York · GMT-04:00
Sep 18, 2026, 8:06 AM
Friday, September 18, 2026 at 8:06:00 AM EDT
Source offset
GMT+05:30
Destination offset
GMT-04:00
UTC instant
2026-09-18T12:06:00Z
Meeting planner
Add participant locations, define acceptable working hours, then choose a suggested slot.
Working hours
Participant time zones
Source zone
🇮🇳 India
Asia/Kolkata
Destination zone
🇺🇸 United States - New York
America/New_York
Suggested slots for 2026-09-18
Slots are ranked by how many participant zones keep the full meeting inside the selected working hours.
Selected meeting
International meeting
30 minutes
🇮🇳 India
Sep 18, 2026, 5:36 PM
Asia/Kolkata · Outside working hours
🇺🇸 United States - New York
Sep 18, 2026, 8:06 AM
America/New_York · Outside working hours
🇬🇧 United Kingdom - London
Sep 18, 2026, 1:06 PM
Europe/London · Within working hours
IANA timezone rules supplied by the browser account for daylight-saving offsets. Suggested slots are planning aids based on the working-hour range you choose; always confirm critical schedules with participants and official sources.
Practical guide
About Time Zone Converter & Meeting Planner
Time-zone conversion is essential when meetings, deployments, support shifts, travel plans and deadlines involve people in different regions. This workspace converts exact wall-clock times with IANA time-zone rules and also helps teams compare several participant locations, check shared working-hour overlap, select a practical meeting slot and export it as a calendar file. Daylight-saving rules are date-specific, so important schedules should still be confirmed with participants and official sources.
Formula or Calculation Logic
Time-zone conversion represents the same moment using the offset and daylight-saving rules of the selected target zone.
IANA names such as Asia/Kolkata and America/New_York are clearer than ambiguous abbreviations such as IST or CST.
Practical Example
Select a date and time
Choose source, destination and optional participant IANA time zones
Compare local times, working-hour overlap and suggested meeting slots
Common Uses
- ✓Scheduling international meetings and interviews
- ✓Planning software releases and maintenance windows
- ✓Coordinating customer support and operations shifts
- ✓Checking travel, webinar and event times
Common Mistakes
- ✓Using ambiguous abbreviations such as CST or IST
- ✓Forgetting daylight-saving changes
- ✓Assuming every country uses a whole-hour offset
- ✓Sharing a time without including the date and time-zone name
Good Practice
- ✓Use an IANA zone name or a well-known city
- ✓Include the date because offsets can change seasonally
- ✓Use UTC for technical logs and system integrations
- ✓Confirm critical travel and legal times with the official source
How to Use This Calculator
- 1Enter the date and time to review.
- 2Search for and select the source time zone.
- 3Search for and select the target time zone.
- 4Review the converted date and time, including any change of calendar day.
- 5Add participant zones, meeting duration and working hours to compare suggested meeting slots.
- 6Select a slot, copy the meeting summary or export an .ics calendar file.
Privacy and Result Checking
The selected date, time and zone values are processed in your browser using built-in internationalisation support.
Important: Always verify flight schedules, legal deadlines and other critical timings with the responsible official service.
Frequently Asked Questions
Why should I use city or IANA zone names?
Short abbreviations can refer to more than one region. IANA names identify the intended zone more clearly.
Why can the converted date be different?
A time-zone offset can move the same moment to the previous or next calendar day in another location.
Should technical systems store local time?
Many systems store timestamps in UTC and convert them to local zones for display, which reduces ambiguity.