For anyone up there looking for the answer for the question in the title:
Coordinates order is longitude and latitude, or easting and northing.
Source:
3.1.1. Position
A position is the fundamental geometry construct. The "coordinates" member of a Geometry object is composed of either:
o one position in the case of a Point geometry,
o an array of positions in the case of a LineString or MultiPoint geometry,
o an array of LineString or linear ring (see Section 3.1.6) coordinates in the case of a Polygon or MultiLineString geometry, or
o an array of Polygon coordinates in the case of a MultiPolygon geometry.
A position is an array of numbers. There MUST be two or more
elements. The first two elements are longitude and latitude, or
easting and northing, precisely in that order and using decimal
numbers. Altitude or elevation MAY be included as an optional third
element.