Calendar import or subscription: will an event update later?
Choose the right way to add an event, avoid duplicate entries and check what happens when the organizer changes the time.
A saved file is a copy
An .ics file can add a meeting to a calendar, but importing it is not a promise that later changes will arrive. Google Calendar distinguishes importing events from subscribing to a calendar. Before adding an event, ask how the organizer will send corrections. For a one-off appointment, keep the original invitation and its contact details. For a changing programme, look for an official subscription option rather than repeatedly importing downloaded files.
Check one event before importing the rest
Open one ordinary event and compare its date, start and end with the organizer's original page. For a call anchored to Paris, verify the corresponding time in Tokyo for that particular date using the time converter. Also inspect an occurrence after a seasonal clock change if the file contains a recurring series. A correct first occurrence does not prove that every later occurrence has the intended local time.
Know how corrections will reach you
If the organizer changes the meeting, check whether your entry actually updates. Reimporting can create a second copy in some workflows; seeing two similar entries is a reason to investigate, not to delete them at random. Keep one clearly identified authoritative entry and confirm cancellations with the organizer. Our recurring-meeting guide explains why a series needs more checking than a single date. Only subscribe to calendars whose source you trust.
Sources
Related reading
How to publish an event time for an international audience
Make the date, location and intended instant clear wherever your invitation is read.
Why recurring meetings move when clocks change
A meeting can stay fixed on one person’s calendar and shift on another’s.