Based on the information provided in the question, it could be anywhere.
Coordinates are 52:21:00N 4:52:00E latitude and longitude of Amsterdam : 52.374004,4.890359 (Values are in decimal degrees)
The city located at 21 N latitude and 157 W longitude is Honolulu, the capital of Hawaii. These coordinates pinpoint a specific location on the Earth's surface, and Honolulu is the major city closest to these coordinates. Latitude measures how far north or south a location is from the equator, while longitude measures how far east or west a location is from the Prime Meridian.
Latitude: 21 degree north Longitude: 103 degree west
The equator, which is at 0 degrees latitude, receives the most intense solar energy on March 21 and September 22 due to being closest to the sun during the equinoxes. At this time, the sun is directly overhead at noon at the equator, providing maximum solar energy.
Latitude: S 25° 21' 9.338", Longitude: E 131° 2' 3.7014"
Mecca's absolute location is approximately 21.3891° N latitude and 39.8579° E longitude.
57 degrees east latitude and 21 degrees south longitude corresponds to a location in the southern hemisphere, on the Tropic of Capricorn in the Indian Ocean off the coast of Madagascar.
Latitude: 62 degrees 27' N Longitude: 114 degrees 21' W
Latitude: 35°21′28.8″N Longitude: 138°43′51.6″E
This location is just SW of the city of Warsaw, Poland.
There are two versions to this answer.1) The absolute location of the Tonga's territory (including the ocean)Latitude: 23°30′SLongitude: 179°W2) The absolute location of Tonga's land areaLatitude: 21°08′SLongitude: 175°12′W
Latitude: N 32° 21' 16.8048"