How do I add US Calendar to Apple Calendar?

How do I add an American calendar to my iPhone?

Go to Settings > Calendar > Accounts > Add Account. Do any of the following: Tap a mail service (iCloud, Microsoft Exchange, or Google, for example), then sign in. Tap Other, tap Add CalDAV Account or Add Subscribed Calendar, then enter your server and account information.

How do I add another timezone to my Apple calendar?

In the Calendar app on your Mac, choose Calendar > Settings, then click Advanced. Select “Turn on time zone support.” Click the pop-up menu to the left of the Calendar search field, then choose a time zone. To choose a time zone that isn't listed, choose Other.

How do I add US holidays to my calendar?

Holidays.
Open the Google Calendar app ..
At the top left, tap Menu. Settings..
Under "More," tap Holidays..
Tap the name of the current country or region..
To add a new country or region, tap it..

How do I import a calendar into Apple calendar?

Import events from a calendar file In the Calendar app on your Mac, if needed, create a new calendar for the events. Do any of the following: Drag the exported calendar file into Calendar. Choose File > Import, select the exported calendar file, then click Import.