Do you mean April 25th?
Here is what Wikipedia says about Alice Day
Hmmm. Real name Jacqueline Alice Irene Newlin. Wikipedia must have gotten something mixed up. No mention of Lewis Carroll, but she did co-star with a Ted Lewis.
Well, anyway, we celebrate Girl Love every year on April 25th, to commemorate the day when Lewis Carroll met Alice Liddell, shortly before her 4th birthday.