https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=5456 --- Comment #3 from Marc Véron <veron@veron.ch> --- Nice feature! However, I can not import to thunderbird calendar. This is what I get as koha.ics: BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.21 BEGIN:VEVENT DESCRIPTION:Your copy of ""Pfützen schreien so laut ihr Licht" :" (barcode 1234567890) is due back at the library today DTSTAMP:20160724T050512Z DTSTART:TZID=Europe/Zurich:20160724T235900 SUMMARY:""Pfützen schreien so laut ihr Licht" :" is due UID:issue-1@ END:VEVENT END:VCALENDAR If I fix the DTStart as follows, it imports OK: BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.21 BEGIN:VEVENT DESCRIPTION:Your copy of ""Pfützen schreien so laut ihr Licht" :" (barcode 1234567890) is due back at the library today DTSTAMP:20160724T050512Z DTSTART:20160724T235900 TZID:Europe/Zurich SUMMARY:""Pfützen schreien so laut ihr Licht" :" is due UID:issue-1@ END:VEVENT END:VCALENDAR Additionally, I think there are to much quotes in DESCRIPTION -- You are receiving this mail because: You are the QA Contact for the bug. You are watching all bug changes.