As far as I remember
AFAIR, the party was on Friday night, not Saturday night.
|AFAIK||As far as I know|
|IIR||If I remember|
|IIRC||If I remember correctly|
|IDR||I don't remember|
|DUR||Do you remember|
|CRAT||Can't remember a thing|
If memory serves, AFAIR stands for "as far as I remember." This acronym usually arrives paired with a statement that someone is mostly sure is true.
You're most likely to encounter AFAIR in chat and text messages. In those messages, AFAIR is used similarly to the much more popular AFAIK.