Quote from the link above:
Atthakatha confirms this:
"When the sun rises in this continent (Jambudiipa), it is the middle watch of the night in Aparagoyaana; sunset in Aparagoyaana is midnight in Jambudiipa, and sunrise is noon in Jambudiipa, sunset in Pubbavideha and midnight in Uttarakuru."
"Imasmi~nhi diipe suuriyuggamanakaalo pubbavidehe majjhanhiko hoti, uttarakuruusu attha"ngamanakaalo, aparagoyaane majjhimayaamo. Pubbavidehamhi uggamanakaalo uttarakuruusu majjhanhiko, aparagoyaane attha"ngamanakaalo, idha majjhimayaamo. Uttarakuruusu uggamanakaalo aparagoyaane majjhanhiko, idha attha"ngamanakaalo, pubbavidehe majjhimayaamo. Aparagoyaanadiipe uggamanakaalo idha majjhanhiko, pubbavidehe attha"ngamanakaalo, uttarakuruusu majjhimayaamoti." (DA.iii.868)
"Jambudiipa" is known to be India and its continent. Then remaining continents can be reconstructed then as:Pubbavideha - Australia,
is located in the east, and is shaped like a semicircle with the flat side pointing westward (i.e., towards Sumeru). It is 7,000 yojanas in extent (Vibhajyavāda tradition) or has a perimeter of 6,350 yojanas of which the flat side is 2,000 yojanas long (Sarvāstivāda tradition). Its tree is the acacia. The people here are about 12 feet (3.7 m) tall and they live for 250 years.Uttarakuru - America,
The inhabitants of Uttarakuru are said to be extraordinarily wealthy. They do not need to labor for a living, as their food grows by itself, and they have no private property. They have cities built in the air. They are about 48 feet (15 m) tall and live for 1,000 years.Aparagoyaana - Africa.
The tree of this continent is a giant Kadamba tree. The human inhabitants of this continent do not live in houses but sleep on the ground. They are about 24 feet (7.3 m) tall and they live for 500 years.
While the size of the continent does make sense but the height of the people is not. Are those human size to be understood literally? 3.7m is a precise figure but I haven't heard any human being has this kind of body height, let alone 7.3m and the long-life span. Mt.Sumeru maybe invisible but are the dwellers of the four continents are also invisible?