Estimate of World Sleeping Population
How many people are asleep right now? Alphabet Passport have an estimate on their site.
The algorithm makes assumptions such as 90% of the population of a country would be asleep at peak time and most people sleep for 8 hours (I wish!). Then taking population and timezone data from Wikipedia the results are plotted on an interactive graph. It also includes notable celebrities who may be asleep at the time.
If you are a benevolent philanthropist who is planning on visiting all parts of the world this month in an attempt to distribute presents to all the good christian children of the world, then this site could be of use to you.