Network – what impact would a total 5-day global internet outage have on the blockchain?

What impact would a temporary total and global internet outage have on the BTC blockchain network? For this scenario, let's assume a failure that lasts 5 days, for example.

By failure I mean: No internet connection in any corner of the world.

What are the main effects during these 5 days and what happens on the 6th day when the internet is back to normal?

I know it's a very theoretical scenario, but I want to understand how resilient the blockchain is.

Thanks for the explanation.