How do I change Time interval for Revision?

On my Anki App+Desktop, when I learn cards… after answering cards I can choose between easy, normal and hard… but sometimes it says that i will repeat them in 1min/10min/4days ( Thats how i want it to be)
But on some other cards it says something like 1min/3months/8,4months … how do I change that for all the cards?anki anki2

Please see