Meaning of Hours LoV in Availability

Summary:

What is the meaning of the Hours values in Availability?

Content (please ensure you mask any confidential information):

When we are creating an Exception, we saw the LoV of Hours which lists the ff:
- 24 hours
- Closed
- Extended
- Limited
- Regular

We can quickly say that 24hrs is the whole 24 hrs of the day.
Closed is when there is when operation is closed for that day.
Regular is regular time.

But what about the Limited and Extended?
What do they mean and what is their difference?

Version (include the version you are using, if applicable):

24B