Biden could have selected any other day for his nonsense

No, he couldn't, and people who are outraged by this don't know how the calendar works.

First of all, International Transgender Visibility Day was established as March 31 all the way back in 2009. Yep, the March 31 date for this day was established 15 years ago by someone named Rachel Crandall. NOT Joe Biden.

See Wikipedia - en.wikipedia.org - International Transgender Day of Visibility

Now, let me explain how the calendar works.

Easter Sunday happens to fall on March 31 this year. It fell on April 9 last year. Next year, Easter Sunday will fall on April 20.

See how that works? ITV Day has been observed on a fixed date, March 31, ever since Rachel Crandall established the day 15 years ago.

Easter Sunday happens to fall on ITV Day this year, by sheer coincidence. It didn't last year, and it won't next year.

ITV Day has nothing to do with Easter.

Why the slap in the face to Christians?

Why do you think this is a slap in the face to Christians? Biden is a Catholic, and a man of faith. And he respects this day. I thought that Christianity teaches that ALL people are God's children.