So it's spelled takhnit but pronounced tokhnit?
it pronounce "tokhnit". You can think of the letters ו and י that are commonly used as vowels as they just there to give you "hints" about how to pronounce the word, but you are not have to use them like in English.
If you write this word with vowels, you would use a kamatz katan under the ת, which is pronounce OH.
Is this also a correct translation,
"This is our new schedule."