Something that I witness far too often for my liking, is people manually entering a list of patterned dates into something – e.g. if someone is creating a scheme of work, where they want every Tuesday for a year, they sit there with a paper diary in front of them, flicking through the pages and manually typing in the date of every single Tuesday in the year. This is very time consuming, and prone to mistake.
Personally, I let the technology do the work for me, and usually spreadsheet software (e.g. Microsoft Excel).
Here is a short video showing 2 different techniques of how you can get Excel to create a list of dates that follow a pattern.