OK, so keep a log on the time of day or night, length of tone heard estimate, loudness of tone heard from 1 to 10 with 10 being the loudest, and which ear was the tone heard in.
Put your entry here and we’ll see if a pattern emerges over time with tones heard around the world!!!!!
OR, as per an interesting insight from 'Shaynard,' do not post your experience with tones as to when or where but instead post a happy thought to replace any negativity that may have a correlation when you hear a tone.