My spouse and I are constantly frustrated because they come from a culture where being 'on time' means arriving 30 minutes after the stated time while I was raised to arrive exactly when invited, and we can't attend social events without one of us being uncomfortable.
More people experience this than they realize.
What each person learned as 'respectful' timing behavior directly contradicts the other's understanding.
“Where Are You with Monochronic vs. polychronic cultures?”
If this sounds familiar, the Library can help you find the bigger picture.