BEGIN:VCALENDAR VERSION:2.0 PRODID:-//hacksw/handcal//NONSGML v1.0//EN TZ:+00 BEGIN:VEVENT DTSTART:20180723T000000Z DTEND:20180725T000000Z SUMMARY:4th International Conference on Green 91AV and Sustainable Engineering starts on the 23rd July 2018 LOCATION:.,Madrid,Spain END:VEVENT END:VCALENDAR