Work through this in order
- Save the invitation to a local ICS file.
- Open the ICS Calendar Event Viewer.
- Read DTSTART, DTEND, SUMMARY and DESCRIPTION values.
- Check timezone identifiers before interpreting meeting times.
- Import only trusted events through your calendar application.
Use the matching tool
Inspect a local copy with ICS Calendar Event Viewer. After the check, save or repair files only using trusted software that supports the format.