As good as it got

This was the sky at about 6.30 this morning, and it got steadily greyer as the day went on. Still, we just had 2.5 days of spring weather, so mustn't grumble!

Just wondering what day summer will fall on this year ...

(I'm not giving the answers to yesterday's puzzle, as so many of you got them right; they're all there in the comments. Thank you for your enthusiastic response. Fun fun fun!)