If you want to see your Notion events in your Google Calendar, it's easy with Notion Power Up. In fact, this doesn't just apply to Google Calendary, but ANY calendar application that takes iCal feeds (eg Thunderbird, etc).

1. Notion Table URL

Given any database with a date field in Notion, the first thing we'll need is the URL link

https://s3-us-west-2.amazonaws.com/secure.notion-static.com/51ada700-21b7-4a44-b987-b74ff41e8622/20191220-d74fb2d6c9290886fad47d24845133fc.png

Note 1: Your dabase must have a date field for this to work.

Note 2: Your database cannot be too large (<100 entries). If your database is larger, then you can create a view of a subset of the data and use the link to the view instead.

2. Calendar Feed

In Notion Power Up, select Calendar Feeds from the menu, and click on Create iCal Feed

Paste the URL from step 1 into the URL of Notion Database field, and select the appropriate fields for Date Field and Summary Field

https://s3-us-west-2.amazonaws.com/secure.notion-static.com/176e912d-923a-4e25-aa86-efc8ef10ccfd/20191220-21cc7e3c8435d6a8041a17121b801c1f.png

At the bottom, you'll see the Feed URL. Copy this to your clipboard as you'll need it next.

3. Add to Google Calendar

Now, go to your Google Calendar, and click on the + by Other calendars and select From URL

https://s3-us-west-2.amazonaws.com/secure.notion-static.com/984091c8-9754-4bd3-8503-55f96cbe8e6a/20191220-704b1a06be06b2c3d2ce7bc4ce4a9f13.png