Worldwide Cyanotype Day Event Details This event is running from 23 September 2017 until 28 September 2030. It is next occurring on 25/09/2027 11:00 am Categories: Cyanotype Tags: CalendarEvent, WCD Upcoming Dates: 25/09/2027 11:00 am – 4:00 pm30/09/2028 11:00 am – 4:00 pm29/09/2029 11:00 am – 4:00 pm28/09/2030 11:00 am – 4:00 pm Join us to celebrate the cyanotype process. Last Saturday in September each year.