Hilary Parker has contributed a lovely article to Significance, the magazine of the American Statistical Association and the Royal Statistical Society, on using R to set your Google calendar to mark the time of sunsets. Hilary details the process in the article, but the basic idea is to use the sunrise.set function from the StreamMetabolism package to calculate sunset times at future date, and then create an R function to write a file of calendar appointments which you can import into Google Calendar. (You can use a similar process to set up calendar events for anything you like — just...