Given that nite is accepted in Chi as an informal spelling of night, I was a bit surpised that midnite wasn't accepted in yesterday's Challenge puzzle. It seems logical to me that, if nite is acceptable, then its variants (midnite, tonite etc.) should also be acceptable.
To be honest, I don't like seeing words like nite and lite in Chi. As far as I'm concerned, they are not legitimate spellings. However, I accept (grudgingly) that they have become part of the language.