Here’s a neat trick: You can have your Mac announce the time aloud at the quarter-hour, half-hour, or hourly using a hidden feature in System Preferences. Here’s how to set it up.
First, open System Preferences by clicking the Apple icon in the top left corner of your screen and selecting “System Preferences”
In “System Preferences” in macOS Catalina or earlier, click “Date & Time”. On macOS 11 Big Sur or later, click on ‘Dock and menu bar’.
If you’re using Catalina or earlier, click the ‘Clock’ tab in the ‘Date & Time’ preferences. In Big Sur or higher, scroll the ‘Dock and menu bar’ sidebar and click ‘Clock’.
Once you’ve opened the Clock preferences, place a check next to Announce the Time. Then, using the drop-down menu, you can adjust whether you want your Mac to announce the time on the hour, half hour, or quarter hour.
For example, if you select “On the quarter,” you will hear announcements at 2:00 PM, 2:15 PM, 2:30 PM, and 2:45 PM. The voice says, “It is two o’clock” or “It is two a quarter to five.”
If you want to change the voice that speaks the time out loud, click the “Adjust Voice” button. On that screen you can choose a male or female voice and also adjust the speaking speed.
After that, close System Preferences and you’re done. As long as the system volume is high, you will hear the time speaking at the intervals you set. Lots of fun!