iPad and iPhone calendars not syncing

Hello ladylvspink,

This page can help provide assistance for issues where iCloud Calendars aren't syncing: If your iCloud Contacts, Calendars, or Reminders won’t sync - Apple Support

Things to check first

1. Check the system status of iCloud Contacts, Calendars, or Reminders for services outages or connection issues.

2. If a reminder isn't showing up on some of your devices, make sure that your iPhone and iPad have the latest version of iOS or iPadOS, or that your Mac has the latest version of macOS.

3. Make sure that you're signed in to iCloud with the same Apple ID on all of your devices. Then, check that you turned on Contacts, Calendars, and Reminders in your iCloud settings.

4. Check that the date and time settings on your device are correct for your current location. 

The "iOS and iPadOS" section of the page will help provide a handful of steps that can help. Try checking after each step to see if it's now working well. The section will cover the following, with further info on each on the site:

1. Restart the Contacts, Calendar, or Reminders app

2. Refresh your contacts and calendars

3. Check your app settings

4. Set iCloud Contacts, Calendars, or Reminders as your default

5. Restart your iPhone, iPad, or iPod touch

Cheers.