☀️ Arselia and Akonia

Erephir accidentally dropped a sheet of paper from her hands, and it fell onto the table, on the surface of which there was some moisture. Part of the paper got wet, and only the spring and autumn versions remained.

"Oh. It worked differently with the doctor, but never mind... He's the one to blame for forgetting things. Okay. I'll stick to my assumption that on November 1st, when Suzerain left, it wasn't her birthday? Because I didn't hear any fanfares in the streets? Or maybe the irony of fate was that she had to leave for a meeting with Despair on that day instead of celebrating?"
-- Well. March 9th is my answer. Using other clues would be unsportsmanlike.