The Software Update pane of World Clock Deluxe Settings (macOS 13 or later) or World Clock Deluxe Preferences (macOS 12 or earlier) lets you check for new versions of the application and for updates of cities, time zones, and DST rules.
Automatically check for updates
Select if you want World Clock Deluxe to use your Internet connection (when available) to automatically check for new versions of the application and for updates of cities, time zones, and DST rules.
Download updates of cities, time zones, and DST rules in background
Select to have World Clock Deluxe download new versions of cities, time zones, and DST rules without asking and notify you just when they are ready to be installed.
Check Now or Show Updates
Click Check Now to check for updates. Click Show Updates to see any available updates.