Meridians are spaced by degrees (0°–180° east or west), and each degree subdivides into minutes and seconds for finer precision. Modern systems often use decimal degrees to simplify calculations: 45.672° E instead of 45° 40' 19.2" E. Lina preferred decimals for fieldwork; they fit tidily into her handheld device and synced easily with satellite data.
“If we don’t cross the line now,” Elara said, gripping the throttle, “the two halves of the day will never meet again.” meridian coordinates