In Lesotho (and I assume other developing countries that teach the English standard) they use those phrases because the 24-hour day and 60-minute hours are a foreign concept to many kids and their families.
I've forgotten how to find and subscribe to a community on an instance other than the one I'm on. Once I get some time to reassociate myself I'm sure I can figure it out again but it's not intuitive.
In Lesotho (and I assume other developing countries that teach the English standard) they use those phrases because the 24-hour day and 60-minute hours are a foreign concept to many kids and their families.