Now that you have created a SEPARATE, NEW calendar for this data:

Import the transit calendar data into that new calendar you just created:  click this link or this:

https://calendar.google.com/calendar/ical/37a4fc0f95d7f49fb257d9c5675011893d7d97fc1f5a48cdf5e5ed977b749bc0%40group.calendar.google.com/public/basic.ics

If you skip the new calendar step and overwhelm your regular default calendar with this data, you will have to delete that calendar to get the data out. You probably don't want to do this. And we certainly don't want you to. So please take heed and make that second calendar.

You can save the calendar as a local file on your device or cloud drive, and import from there. 

This will allow the device to adjust to your timezone. Logging into Google and subscribing from there has the same effect.

Tips:

For more control over the calendar: create a new calendar in your Calendar area. Then import the calendar ical/ics formatted file into that calendar.

The ical/ics method works well with Apple products and many other calendar programs.

More iOS/iPhone/Mac help: 

Import_iOS

For reference - 2025 Calendar ID:  
37a4fc0f95d7f49fb257d9c5675011893d7d97fc1f5a48cdf5e5ed977b749bc0@group.calendar.google.com