My use of a landing light saved me from a near miss while landing at an uncontrolled airport.
It was a very hazy calm day. After flying a full circuit where I made the usual calls I turned final. On short final I observed a plane climbing and turning away from the opposite end of the runway. The plane joined a downwind for the runway I landed on and then landed.
The pilot approached me after I landed and apologized. He had inadvertently tuned the wrong advisory frequency and so did not hear my circuit calls. He realized something was wrong when he saw my landing light at his 12 O'Clock when he turned final. He never saw my actual aircraft in the hazy conditions until he was abeam me in the downwind as I touched down.
He noted that he the never used to turn on his landing light during day light hours but after seeing the difference it made he would always do so in the future