I use optifine and the clouds just aren't there, i looked in every tab and tried everything i could think. I do use shaders but i took them off and still only the sun and moon that have changed. What specifically has to be there for the clouds to work. That's the reason i got this texture pack. I saw it on someone's video and i searched for a dew hours trying to find and i finally found it and its not even working.
Never mind i got it!