@sdetweil
I found the 2019 calendar link :
https://www.calendarlabs.com/ical-calendar/ics/76/US_Holidays.ics

I also found an error in my calendar which I was able to fix and it now works correctly. Thank you for your assistance.

@sdetweil Oh that makes alot of sense.

The google calendar I have been trying is in the format:
https://calendar.google.com/calendar/ical/....................gmail.com/public/basic.ics
I have made it public as well.

@sdetweil Yes, when I copy/paste URL in browser I am able to download the ics file. I am trying to get my Magic Mirror to update when I update calendar via Alexa. The default calendar in the Magic Mirror config file nor my public Google calendar show up. I am just getting “US Holidays; no upcoming events”

I am currently having this issue as well. I have tried the above suggestions with no luck. Anyone still having this issue or may know how to help?

All modules working except for calendar. Calendar is a public .ics. Have tried a clean reinstall of my pi and am stuck at the same point.