I got an email from René (reben) about Viva Italia in Assen (NL) in 2020. It's moved back to "Pinkster" Monday (1st Monday in June) the same as in 2015 (in later years it was earlier, in April). Seeing as that is a holiday weekend in NL, it might be worth booking accommodation a little earlier this year?
Same successful formula as before, but do note that it is on a Monday, the week after the UK Spring Bank Holiday on 25 May. René expects to organise a group meal the night before, in or around Assen. See you there!https://www.viva-italia.nl/