Yes, and Sunday has it's own name, "Chủ nhật." After that, Monday is "day two," Tuesday is "day three" and so on.
I consider myself an open person about different cultures, customs, beliefs, religions, food, languages, anything...
But Sunday as first day of week is something I cannot forgive.
The only worse thing is date format mm-dd-yyyy.
I think the worst thing is not to have a regular/standard format... we, Canadians, are so indecisive. we sometimes write dd/mm/yyyy, other times mm/dd/yyyy. we often use both metric and imperial systems in our daily life. (kilo)meter for distance, but foot/inch in construction, and both for a person height. Celsius for weather, but Fahrenheit for the swimming pool temperature. both (kilo)gram and pound are used for a person weight and at the grocery store. litre is standard, but gallon is used for the water heater....
I'm still not familiar with this after so many months. My culture has Monday as the first day of the week. I have to count every time.
actually, if you pay attention to a standard Gregorian calendar, you will see the first column is Sunday....
But it marks it wrong if you write that! And in a lesson review, you can't know if this refers to the lesson on days of the week, or the lesson on numbers!
I don't know if it's accepted or not, if it's in the lesson about date or not, but taken out of context, "thứ năm, thứ sáu, thứ bảy" can definitely be used for "fifth, sixth, seventh" beside meaning "Thursday, Friday, Saturday".
The problem is that when you do it as practice, you don't know which lesson is being references, and it will mark "fifth, sixth, seventh" wrong.
I'm sorry I can't be of any help. someone asked a question and I answered, but I cannot to do more. you'll need to wait for Huy or any eventual contributors to add it to the database.