More recent than Bloomsday, but showing signs of becoming a permanent fixture of the literary calendar, is Dalloway Day – this year the Royal Society of Literature takes the 96th Wednesday after that of Clarissa Dalloway’s party into the virtual world – to which we are still bound by virtue [sic] of the corona pandemic.
The British Library blog also has an entry with their own contributions, and cross referencing to the RSL and others.
Especially interesting this year, and in light of the discussions about race, is an aural tour exploring the black heritage on London streets once walked perhaps by a Mrs. Dalloway and most certainly by Virginia Woolf. Following is the audio tour on Soundcloud, and here is an accompanying interactive map.