EXPLORE SMALL & GREAT CIRCLES
Earth Geometry Explorer
Join two points along a latitude circle or a meridian circle.
YOUR COORDINATESEdit the point letters · Latitude, then longitude
Click the globe to place point A
Drag to rotate · Click to place a point
Idealised UTC bands: 15° of longitude per hour. The black International Date Line is shown at 180° as a classroom reference; the actual line bends around some countries and islands. Actual civil boundaries, half-hour zones and daylight saving can differ. City dropdowns use actual UTC offsets.
Northern quarter removed: 0°–90°E. Lines from the central dot mark latitude angles on the upright faces and longitude angles on the equatorial face every 10°. Circles of latitude become smaller towards the North Pole.
Choose two points to identify the circle.
Use a shared latitude or a meridian circle. A dashed section is on the far side.