I read with Ari (3-6 months), Angel Readings (3 months), Autumn Rivers (3-6 months), ST (6 months), CD (6months to 1 year) and Bryan. Based on my personal experiences, they are all quite good in short term prediction, except Bryan, he is more of an empath.
The only one which i read had nailed exactly what is happening to me after 2 years was Spirit Messages which I don't think she is still active on Bitwine.
I still think if the prediction mean to happen with the shorter time frame, the readers will be able to pick, but if it's far future it will be difficult to gauge the time frame and things change with so many unforeseen factors in life and also people believe so called "free will".