How to use Google Calendar without Internet access?
Google Calendar can also be used offline in Google Chrome. This feature doesn’t make Google Calendar any different because of the state of the Internet.
You need to open Google Calendar to use this feature. Then click on ‘Settings’ in the upper right and click on Reset. Then go to the ‘General’ option on the left side and click the Offline option which goes offline.
Now click on the ‘Reload’ option. When syncing offline, an icon appears on the right side. Displays calendar status offline when offline. This feature allows you to view dates up to four weeks ago and forever.