I used to have a ringtone that, pardon the pun, rang a bell: I was sure it was from some modern string quartet, but couldn’t find it in my collection.

Years go by. Today I get in the car, turn on the radio and hear that musical phrase. I wait for the piece to end, but the title is not announced. Well, maybe the station webs its playlist. I get home, refer to the website and find, for the time in question, some song by Daniel Lanois (surrounded by other songs rather than string quartets). Argh.

An hour later I turn on the radio again and hear “Every Day Is a Winding Road”, which was on the list. So I scroll back an hour . . . .

It is in fact the second movement of Ravel’s string quartet in F.

Somewhere or other I recently mentioned having heard that, because the Gregorian calendar cycle of 400 years is a multiple of 7 days, the 13th of the month is not evenly distributed and falls more often on Friday than on any other day of the week; but I had not done the math myself and did not have the numbers. Now I’ve done it but can’t remember where to post the followup!

Someone has snapped up my old unwanted domain to start a blog in (i think) Swedish.

Average illumination near the Moon’s south pole, showing which crater floors never (or almost never) see sunlight. Unfortunately the text doesn’t quantify what the whitest pixel means, i.e., how much time the most-illuminated point spends in shadow.

Wobbling time exposure of Regulus and Mars, showing ‘twinkle’ in a novel way.

This site had half as many visits in April as in March, presumably either because the old domain expired or because folks are busy getting ready for the end of the world.