All of these throws are excellent, excellent, excellent... Professor Willow is investigating! On Monday, April 1st, 2024, from 12:00 a.m. to 11:59 p.m. local time, for April Fools Day, Nice Throws or better will register as Excellent Throws in Pokémon GO!

Source: https://twitter.com/PokemonGoApp/status/1774376093778125300