Hi Lars, Lars Ingebrigtsen writes: > EXTERNAL EMAIL : The sender of this email is external to 3DS. Be wary of the content and do not open unexpected > attachments or links. If you consider this email as spam, you can click the following link > == > (no login or additional action will be requested). > > > Martin Apel writes: > >> When importing the attached minimal ical file using >> icalendar-import-file, the resulting time is off by one hour. The >> problem probably lies somewhere in >> icalendar--convert-recurring-to-diary, but I couldn't pinpoint the >> exact location. The only meeting in the attached icalendar file is >> defined in timezone 'America/New_York' at 10 am. It shows up in my >> diary (which is timezone 'Europe/Berlin') at 3pm, even though the time >> difference between the two timezones is 6 hours. > > No, the difference varies -- Daylight Savings started on March 13 in the > US but on March 27 in the EU, and in that period there was a five hour > difference. > > And: > > DTSTART;TZID="America/New_York":20220317T100000 > DTEND;TZID="America/New_York":20220317T103000 > > This was in the middle of that period. So this seems like it's working > as it should? > > But if I'm reading the ical file right, this is a recurring (weekly?) > event, so it should be at 4pm after March 27... I thought that it might have something to do with the different start dates for daylight savings time. However it should show up at 4pm, but it shows up at 3pm after March 27. Maybe this is a more general problem, that the diary does not consider timezones at all. I think, that the conversion functionality would need to convert each date of a recurring event separately, as the daylight savings time might have changed between consecutive repetitions. However the diary syntax does not allow to specify this, as far as I understand. So maybe this is more of a shortcoming in the diary syntax than a conversion problem. Probably instead of diary-cyclic another sexp would be needed, which also takes the time of day into account, which diary-cyclic does not do. Thanks, Martin This email and any attachments are intended solely for the use of the individual or entity to whom it is addressed and may be confidential and/or privileged. If you are not one of the named recipients or have received this email in error, (i) you should not read, disclose, or copy it, (ii) please notify sender of your receipt by reply email and delete this email and all attachments, (iii) Dassault Systèmes does not accept or assume any liability or responsibility for any use of or reliance on this email. Please be informed that your personal data are processed according to our data privacy policy as described on our website. Should you have any questions related to personal data protection, please contact 3DS Data Protection Officer at 3DS.compliance-privacy@3ds.com For other languages, go to https://www.3ds.com/terms/email-disclaimer