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How can I set hourly reminder in Mac ? If possible how to set my customised voice?
Open Date and Time Preferences.
Move to the Clock tab, and check Announce the time.
To customize the voice, click Customize Voice.
Choose one on the list, or click Customize for a larger list.
Set up a reminder on Reminders, for example, set one for today at 9:00 am have it repeat daily. The trick is to never complete the reminder just click leave then select an hour this will give you a reminder with a note every hour.