Is [name]Day[/name] too weird to be used as a middle name? Usually I am not into word names, but this has special connotations for me 
In my book nothing or nearly nothing, is too weird for a mn. It’s most important that it has a special meaning to you.
Absolutely not. (Though I instantly think of male actor [name]Daniel[/name] [name]Day[/name] [name]Lewis[/name].) [name]Day[/name] is a lovely short strong middle name.
I think it is fine. I have seen people be far more adventurous for middle names.
I think its a great middle name, I’m totally curious as to what you’ll be pairing it with though.