[Academic] IDL 2019

Tue May 14 16:22:40 BST 2019

Thursday May 16, 2019 is the International Day of Light<https://McPhersonInc.us18.list-manage.com/track/click?u=389fac8dff800125f36e43f96&id=5bc849ade7&e=f57a7a0a03> (#IDL2019<https://McPhersonInc.us18.list-manage.com/track/click?u=389fac8dff800125f36e43f96&id=f3b04a4bcc&e=f57a7a0a03>).https://www.lightday.org/

Without looking it up, like I just did, does anyone know why this particular day has been chosen?

Kevin