phrase usage - Meaning of "First day of week" in different countries

"First day of week", as shown by calendars in general use, is different depending on country. Example:

(Monday) versus (Sunday).

What is its meaning/use in countries where English is an official language (e.g. USA, UK, New Zealand, Australia, India, South Africa, Malta, Ireland, Canada)?

I am looking for an answer similar to

"In [country] it is Monday, whereas in [country] it is Sunday. Also in [country] it is Sunday, while in [country] it is Monday. ..."

Thus, maybe just take a look at your calendar and tell me what you see (and where you are located).

Related: http://www.tondering.dk/claus/cal/week.php, "What is the first day of the week?" (which neither gives a list).

Answer

The list of countries where English is an official language is very long. Looking at just the ones you list in your "for example", here's what timeanddate.com's calendar generator has to say:

Australia: Sunday
Canada: Sunday
India: Sunday
Ireland: Monday
New Zealand: Sunday
South Africa: Sunday
United Kingdom: Monday
United States: Sunday

Timeanddate.com doesn't include Malta for some reason, so I checked a tourism website and it says Monday.