Sounds like you've never seen an actual hardware failure; you've only seen scheduled maintenance. You don't get any notice at all with host failures. You get an email like this:

"We have important news about your account (AWS Account ID: XXXX). EC2 has detected degradation of the underlying hardware hosting your Amazon EC2 instance (instance-ID: i-XXXX) in the us-east-1 region. Due to this degradation, your instance could already be unreachable. After 2018-12-28 19:00 UTC your instance, which has an EBS volume as the root device, will be stopped."

The stop date is 2 weeks after the email is sent, but as the message states, the instance is likely already dead. It was already dead in this case. GCP will live migrate your instance to another host.

That's the email I get. I had 1 in 2018 but it was 4 weeks from the received date, not 2. Only a couple of our servers are older than 12 months tho, we usually generate new AMI's roll them out to keep them up to date.

I wouldn't jinx it.

Like the parent said; we used to receive these notices quite frequently and the amount of time varies wildly. I should ask the teams who currently/primarily use AWS perhaps the situation has changed?

But it was not uncommon to have 24hrs of notice, especially for instances in US-EAST2 for some reason.

We use us-west-2, but I'm touching wood non-the-less.