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Chronos Calendar automatically syncs all calendars from your connected Google accounts. You have full control over which calendars are visible and can manage multiple Google accounts simultaneously.

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Calendar Visibility Panel

The calendar visibility panel is your central hub for managing which calendars appear in your view.

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Accessing the Visibility Panel

1

Locate the Calendar Chip

Look for the colorful calendar chip in the top-right area of the calendar view. It displays:
  • Colored dots representing your visible calendars (up to 5)
  • A count badge showing the total number of visible calendars
  • A dropdown chevron icon
2

Open the Panel

Click the calendar chip to open the visibility panel. The panel displays all your connected Google accounts and their calendars organized hierarchically.
3

Browse Your Calendars

Each Google account can be expanded or collapsed to show its calendars. Accounts are identified by their email address.
The calendar chip shows a preview of up to 5 calendar colors. If you have more visible calendars, you’ll see a “+X” badge indicating the additional count.

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Showing and Hiding Calendars

Control which calendars appear in your calendar view:
1

Open the Visibility Panel

Click the calendar chip to open the calendar visibility panel.
2

Expand an Account

Click on any Google account email to expand and view all calendars for that account. The chevron icon indicates whether the account is expanded or collapsed.
3

Toggle Calendar Visibility

Click the checkbox next to any calendar name to show or hide it:
  • Checked - Calendar is visible and events will appear in your view
  • Unchecked - Calendar is hidden and events won’t be displayed
The checkbox displays the calendar’s color when checked.
4

View Changes Immediately

Changes take effect instantly. Events from hidden calendars disappear from your view, while events from newly visible calendars appear immediately.
Hiding a calendar only affects your view in Chronos Calendar. The calendar and its events remain unchanged in your Google Calendar account.

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Understanding Calendar Properties

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Calendar Colors

Each calendar has an associated color:
  • Colors are synced from your Google Calendar settings
  • The color appears as a dot next to the calendar name
  • Events from that calendar display with a colored border matching the calendar color
  • Calendar colors help you visually distinguish events at a glance

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Primary Calendar

Your primary Google Calendar is marked with a “PRIMARY” badge:
  • This is your main calendar in Google Calendar
  • New events are typically created in your primary calendar by default
  • Each Google account has one primary calendar

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Calendar Hierarchy

📧 [email protected]
  ├─ 📅 Personal (Primary)
  ├─ 📅 Work
  └─ 📅 Holidays

📧 [email protected]
  ├─ 📅 Calendar (Primary)
  ├─ 📅 Team Events
  └─ 📅 Meetings
Calendars are organized by account, making it easy to manage calendars from multiple Google accounts.

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Managing Multiple Google Accounts

Chronos Calendar supports connecting multiple Google accounts to view all your calendars in one place.

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Adding a Google Account

1

Open the Visibility Panel

Click the calendar chip to open the visibility panel.
2

Click 'Add Google Account'

At the bottom of the visibility panel, click the “Add Google Account” button with the plus icon.
3

Authorize the New Account

You’ll be redirected to Google OAuth to sign in with another Google account:
  • Sign in with the Google account you want to add
  • Grant calendar permissions
  • You’ll be redirected back to Chronos Calendar
4

Access New Calendars

The new account and all its calendars will appear in your visibility panel. By default, all calendars from the new account are visible.
Adding multiple accounts is perfect for users who maintain separate personal and work calendars, or need to manage calendars across different organizations.

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Switching Between Accounts

With multiple connected accounts:
  • All calendars from all accounts appear together in your calendar view
  • Use the visibility panel to show/hide specific calendars
  • You can create events in any calendar from any connected account
  • Each account maintains its own authentication and sync status

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Account Reauthorization

If an account needs reauthorization, you’ll see a warning indicator:
When you see an alert circle icon (⚠️) next to an account email, it means the account needs to be reauthorized:
  • OAuth tokens may have expired
  • Permissions may have been revoked
  • There may be a sync error
To fix this, disconnect and reconnect the account through Settings.

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Calendar Sync

Chronos Calendar uses real-time synchronization to keep your calendars up to date.

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How Sync Works

  1. Initial Sync - When you connect a Google account, all calendars and events are downloaded
  2. Real-time Updates - Changes are synced using Google Calendar’s push notifications and polling
  3. Bi-directional Sync - Changes in Chronos Calendar sync to Google, and vice versa
  4. Incremental Sync - Only changed events are updated to minimize bandwidth

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What Gets Synced

  • Calendar names
  • Calendar colors
  • Primary calendar designation
  • Calendar time zones
  • Visibility settings (per-calendar)
  • Event titles and descriptions
  • Start and end times
  • All-day events
  • Event locations
  • Event colors
  • Recurrence rules
  • Attendees and guest lists
  • Todo items (stored locally in Chronos)
  • Calendar visibility preferences (specific to Chronos)
  • UI preferences and settings

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Sync Status

To check if your calendars are syncing properly:
  • Events should appear within seconds of being created in Google Calendar
  • Changes made in Chronos Calendar appear immediately in Google Calendar
  • If sync stops, check for the reauthorization warning icon
Google Calendar API has rate limits. If you make a very large number of changes quickly, some updates may be delayed by a few seconds.

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Removing Google Accounts

To disconnect a Google account from Chronos Calendar:
1

Open Settings

Click your profile picture in the bottom-left corner and select “Settings”.
2

Navigate to Connected Accounts

In the Settings panel, find the “Connected Accounts” section.
3

Remove the Account

Click the delete/remove button next to the account you want to disconnect.
4

Confirm Removal

Confirm that you want to remove the account. All calendars and events from that account will be removed from your Chronos Calendar view.
Removing a Google account from Chronos Calendar:
  • Removes all calendars and events from that account from your view
  • Revokes Chronos Calendar’s access tokens for that account
  • Does NOT delete any data from your Google Calendar
  • Does NOT automatically revoke permissions in your Google Account (do this manually via Google Account settings)

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Best Practices

Use Color Coding

Leverage calendar colors to quickly identify events from different calendars. Keep related calendars in similar color families.

Hide Inactive Calendars

Hide calendars you don’t need to see regularly to reduce visual clutter. You can always show them again when needed.

Organize by Account

When adding multiple accounts, collapse account sections you’re not actively using to keep the visibility panel clean.

Regular Sync Checks

Periodically check for the reauthorization warning icon to ensure all your calendars are syncing properly.

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Troubleshooting Calendar Issues

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Calendar Not Appearing

  1. Check if the account is expanded in the visibility panel
  2. Verify the calendar is checked/visible
  3. Check for a reauthorization warning on the account
  4. Refresh the page to trigger a manual sync

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Events Not Syncing

  1. Look for the reauthorization warning icon (⚠️) next to the account
  2. Check your internet connection
  3. Verify the calendar is still visible in the visibility panel
  4. Try disconnecting and reconnecting the account

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Wrong Calendar Colors

  • Calendar colors are synced from Google Calendar
  • To change a calendar’s color, update it in Google Calendar
  • The change will sync to Chronos Calendar automatically

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Loading Indicator Stuck

If the visibility panel shows “Loading…” indefinitely:
  1. Close and reopen the visibility panel
  2. Refresh the browser page
  3. Check the browser console for error messages
  4. Try signing out and back in

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Next Steps

Creating Events

Learn how to create and edit events across your calendars

Organizing Todos

Explore the todo system to manage tasks alongside your calendar

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