Convert meeting times across regions with daylight-saving awareness and handy offsets.
Source Time
List includes major IANA zones. Start typing to search.
Target Zones
Add extra time zones to compare simultaneously.
Converted Times
🕘
Source Time
—
UTC offset
🕒
Primary Target
—
UTC offset
📅
Daylight Saving
—
DST status for source and target
Time Zone
Local Time
UTC Offset
DST
📖 How to Use
Select the source time zone and date/time, choose a target zone, add optional extras, then convert. The results table lists each zone, offset, and DST status using the IANA tz database.
🧮 Formula Reference
Local time = UTC time + zone offset derived from the IANA time zone database.
Use Intl.DateTimeFormat with timeZone to format zoned timestamps and retrieve offsets.
Daylight-saving status detected by comparing offsets across the year (e.g., January vs July) for the same zone.
Additional zones are parsed as comma-separated IANA IDs and each rendered with local time, offset, and DST flag.
💡 Tips
Always confirm local holiday/DST rules for future meetings.
Use UTC for logging and data exchange, converting only in presentation layers.
Include meeting links with absolute UTC timestamps to avoid miscommunication.
🔗 References
IANA Time Zone Database.
MDN Web Docs – Intl.DateTimeFormat and time zone usage.