BEGIN:VCALENDAR VERSION:2.0 PRODID:-//hacksw/handcal//NONSGML v1.0//EN TZ:+00 BEGIN:VEVENT DTSTART:20250720T000000Z DTEND:20250727T000000Z SUMMARY:ADVANCED STUDY COURSE ON OPTICAL CHEMICAL SENSORS (ASCOS2025) starts on the 20th July 2025 17:00 LOCATION:University of Leon,Leon,Spain END:VEVENT END:VCALENDAR