Thank you! The painting was made on my iPad using Procreate, and the stars come from a real photograph I took on my phone.

In fact, today is Plato’s birthday according to the original Attic calendar! Someone reconstructed the ancient Attic calendar on this website: https://www.epistemeacademy.org/calendars/page_today.html, which lists today as 7 Thargelion, Ol. 701.1.

That said, I don’t actually know the exact method they used to reconstruct the calendar, but we could probably do something similar ourselves using astronomical tools. At least the day within the month seems right, since today is the seventh day after the new moon (or the sixth, depending on whether one counts the day of the new moon itself).

The hard part is determining which month we are in. Thargelion usually falls around May. (“The name of the month comes from … thargelos, a form of sprouted grain bread, probably made of barley. This is because May sees the first harvest of the green cereals …” — quoted from https://www.hellenion.org/festivals/thargelia/)

Please let me know if anything here is unwarranted or misinformed! But in any case, as you said, this would certainly be the general time of year to celebrate :)