A technical deep-dive into how we solve Microsoft Outlook's timezone synchronization problem
Microsoft Outlook's calendar export uses a flawed ICS format that embeds the timezone where the event was created, not where it takes place. When you subscribe to this calendar in Google Calendar, events appear at incorrect times.
Example: Meeting created in Paris (CET) scheduled for 2:00 PM
→ Shows as 8:00 AM when viewed from New York (EST)
Even though the meeting should be at 2:00 PM New York time!
ICS Fixer intercepts your Outlook calendar feed, removes incorrect timezone metadata, and forces all events to display in your chosen timezone. Google Calendar then correctly displays events at the right local time, no matter where you are.
Your calendar with broken timezone data
Our intelligent conversion service
Shows correct times everywhere
ICS Fixer automatically refreshes your Outlook calendar every 2 hours. Google Calendar then syncs the feed approximately every 4-6 hours, keeping your calendar up-to-date throughout the day.
We parse every event in the ICS file and force all timestamps to use your selected timezone, eliminating timezone conversion errors.
Our dashboard shows live sync status, with instant alerts if something goes wrong with Microsoft, conversion, or Google access.
The output feed is fully compliant with RFC 5545 (iCalendar specification), ensuring compatibility with all calendar applications.
Problem:
Includes broken timezone metadata that causes time display issues
ICS Fixer Solution:
ICS Fixer strips this metadata and enforces correct timezone
Problem:
Create duplicate events instead of subscribing, expensive for calendar sync
ICS Fixer Solution:
ICS Fixer uses calendar subscription for real-time updates without duplicates
Problem:
Only available for paid Microsoft 365 accounts, doesn't fix timezone issues
ICS Fixer Solution:
ICS Fixer works with free Outlook.com accounts and solves timezone problems
Start syncing your Outlook calendar with correct timezones in under 2 minutes