Recently, I converted to using ISO-8601 formatted dates as much as possible, e.g. 2020-06-12. As a meme, I hope this catches on. Dates written this way are internationally recognizable, no confusion over mm/dd/yy or dd/mm/yy. They are sortable. And, when used consistently, they are easy to search; no worries about case sensitivity, or Jun/June spellings. Don’t take my word for it, though. Randall Munroe agrees. So does GitLab.

Here's how to create a keyboard shortcut to insert the current date formatted as ISO-8601.

1. Launch Automator, and create a new Service.

2. This particular service receives no input.

3. Drag in Run AppleScript to the service.