BEGIN:VCALENDAR VERSION:2.0 PRODID:-//hacksw/handcal//NONSGML v1.0//EN TZ:+00 BEGIN:VEVENT DTSTART:20250623T000000Z DTEND:20250624T000000Z SUMMARY:European Congress on Nanomaterials starts on the 23rd June 2025 09:00 LOCATION:Candia Hotel,Athens,Greece END:VEVENT END:VCALENDAR