I get a thrill when data can be used for art and how it helps in communicating information and ideas. Here is a pretty cool art piece which is actually showing the various school holidays (Holi-Dates as I say) in Singapore for 2015.
You can see for yourself the original file for reference. Great for planning those holidays in multi-school families. Let me know if you want to collaborative Google sheets to contribute to the Holi-Dates for 2016!