I would love a spell to skip time but keep the memories from the time spent, I don't want it to be fluff, so I assume it could be done by messing with the brain. I would love a spell like that! Just an idea though, I'm not very skilled yet :)
You don't need a spell for that,after all there is no such thing.Don't expect to see days pass like minutes.It is like Einstein said:
If you put your hand in boiling water for 2 minutes it will seem like 2 hours and if you sit next to a beautiful lady for 2 hours it will seem like 2 minutes.
So my advice is if you are frustrated/anxious/impatient about a situation/event and time just doesn't seem to move,calm and take away your focus from your surroundings and let all your thoughts fade away for about 5 minutes.Being impatient is what makes time seem to slow down.
This is achieved quite simply. Alter your state of mind via meditation. Obviously time won't literally he distorted this way, but with enough practice, you can make hours feel like seconds or vice-versa.