Better late than never?

Every six months or so, I update the sunrise chart for Chicago. Because of a bug in the tool I wrote to generate the raw data I use, and because fixing that bug fell nearly to the bottom of my priority list, I didn't fix it until Monday.

So, finally, I've updated the chart. Enjoy. The next one should be on time at the end of the year.

I created one of these for Cambridge many years ago, although not quite so colourful as yours. I never felt the need to update it on a yearly basis, as it was accurate enough as a general guide for any year, so I salute your dedication.