It is the first day of the month. It's time to back up your genealogy files.
Actually, you can make backups at any time. However, it is easier and safer if you have a specific schedule. The first day of the month is easy to remember, so I would suggest you back up your genealogy files on the first of every month.
Of course, you might want to back up more than your genealogy files. Family photographs, your checkbook register, all sorts of word processing documents, and much more need to be backed up regularly. Why not do that on the first of each month?
How much information and how many pictures will you lose if your hard drive crashes this evening?
By the way, all hard drives WILL crash someday. The only question is "when?" Make your backups today.