You remember that haircut as more recent than it actually was
When people try to date their own memories, distant events tend to drift forward in time and feel more recent than they really were, a distortion survey researchers call the telescoping effect. It's why crime victims interviewed without a fixed reference point systematically over-report how many incidents happened recently. Researchers correct for it with 'bounding': giving people a specific anchor date, like a previous interview, to measure their memories against.