How to do it:

Many communities publish calendars pre-loaded with dates that you can import to your digital calendar. Apple and Google also publish their own for a wide array of communities, and will allow you to turn them on and off so you can have an “uncluttered” view of your own schedule. If that doesn’t work for your calendar, you can add the most important dates (start with ones you’ve heard of) manually. Be aware both Jewish and Muslim calendars shift each year, so you can’t ‘set and forget’ if you do this.

Keep an eye out for upcoming events. If they require fasting, abstaining from work, or are important family holidays, try to avoid scheduling important meetings, tests and so forth. Remind others to check calendars for local communities before scheduling too. You can also post greetings on social media to help spread awareness. (Check for cultural appropriateness. “Merry Yom Kippur” is not going to hit right, though it’s unlikely anyone will get mad that you tried.)