I use a two-pronged approach to back up up my Ubuntu Linodes: I use Linode's own backup serviceDuplicati to back up specific directories & mysqldump of my databases to Backblaze B2For an overview
This is one of those simple problems for which a multitude of answers present themselves. But which is better? For starters, your "given date" could be the current date, or an arbitrary date
This is an implementation of the United States Naval Observatory's algorithm for calculating sunrise/sunset based on latitude, longitude, and current timezone. It is a translation of a solution published on CodeProject by