BEGIN:VCALENDAR VERSION:2.0 PRODID:-//hacksw/handcal//NONSGML v1.0//EN TZ:+00 BEGIN:VEVENT DTSTART:20230929T000000Z DTEND:20230929T000000Z SUMMARY:Ptychography over all wavelengths: Poster abstract deadline due before 29th September 2023 LOCATION:The Randolph Hotel, Oxford,Oxford,United Kingdom END:VEVENT END:VCALENDAR