Here are some strategies to fix this annoyance.

An old friend messaged me: his wife’s OS X Calendar app was making duplicates for every entry. She’d create a new entry, fill it out, and then within a moment a duplicate labeled “New Event” appeared. The calendar is synced via iCloud, and it seems like a problem that would be related to that.

Because iCloud sync is live, whenever you create a new event in a synced calendar, the Calendar app pushes the initial raw entry on creation to iCloud, and as you modify it, those updates are sent. It would seem, in this case, that the initial entry is created in one step, and the modified version has a different underlying bit of tracking data that makes it appear like a distinct appointment.

That leads to the initial New Event synchronizing back to the creating Calendar app (and all other synced calendars). Why is this happening? So far, I don’t have an answer for my friend’s wife, but if you’re having a similar problem, here are strategies to try that have worked for other people.duplicate calendar

Refresh calendars. Apple suggests choosing View > Refresh Calendars in the Calendar app, which performs a force synchronization. If there’s a lag, this can bring calendars back into sync.

Log out of iCloud on connected devices and back in. This is an extreme and irritating move to have to make, because if you’re using iCloud for a number of services and for syncing, you have to answer questions when you log out about what to keep and what to delete. (Typically, keep everything, and it will sync and merge back when you log back in.) Many users in forums have found this solved duplicate entry problems.

Check your lag across devices. If you have the same calendars syncing on multiple devices to iCloud or other services, like Google, it’s possible that you’re having a disconnect among them. You create an event on your Mac, it syncs over iCloud to an iPhone, but when you update the original entry, the iPhone acts as if it created the event in the first place. Calendar-sync services are designed to avoid this particular problem, but if you can have all your devices in one place and watch whether this occurs, it might reveal the cause of the problem.

How to recover deleted calendars from iPad/iPhone/iPod on Mac?

Is there any possibility to restore those deleted calendars whithout backup? Yes, you can get them back via this iPhone/iPad/iPod calendar recovery software:Syncios Data Recovery. Besides calendars, it can also recover photos, messages, contacts, notes, videos, call history and more.

iPad data recovery

The first thing you need to do now is to download and install this iPad calendars recovery program to your computer. You can choose the different versions according to your computer operation system.
Download data recovery windowsDownload data recovery mac
In this guide, we will show you how to retrieve lost iPad calendars with three recovery modes on Mac: recover lost calendars directly from iPad, restore iPad calendars from iTunes backup file, retrieve iPad calendars from iCloud backup file.

Recover lost calendars directly from iPad. Connect your iPad to computer and run Syncios iPad Data Recovery.When your device get recognized and connected successfully, click Start button to begin scanning to recover deleted data. Once the scanning finished, those found data on your iPad will be displayed according to file types. Just click Calendar and press the Recover button to save them to your computer.

preview deleted iPad calendars

Restore iPad calendars from iTunes backup file. In this solution, you do not need to connect your iPad to the computer. It will allow you to extract the iTunes backup file on your computer.If you have synced different iOS devices with iTunes before, more than one backup files will show up in the window after you click Recover from iTunes Backup File. Just choose the one for your iPhone and click Start Scan.When the scanning is completed, you can see all extracted files. Just select “Calendar” and click “Recover” to recover found data to computer.

recover calendar for iTunes backup

Retrieve iPad calendars from iCloud backup file. In this solution, you do not need to connect your iPad to the computer. After selecting “Recover from iCloud Backup File”, you will get prompted to sign in to iCloud. Just enter your Apple ID to sign in it. If you have synced different iOS devices with iCloud before, more than one backup files will be displayed in the window after you click “Recover from iCloud backup file”. Just choose the one for your iPad and click “Download”. Once the downloading progress is finished, you can begin scanning the details. Just click “Scan Downloaded”, this program can extract the iCloud backup file quickly. Now, you can preview your iCloud backup file in detail. Choose Calendar to preview and select what you need to retrieve, then click Recover , you will get prompted to recover to computer, just press it and select the location you would like to store.

recover calendar from iCloud backup

Now, the backed up calendars will be saved as .html file to your Mac.

iPad calendar recovered

Reference: Macworld

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