| other at right angles on a map. Grid systems allow |
| you to locate or report on a specific point on the |
| map. |
Heading (hea) | Compass direction on the present course. |
Latitude | Angular distance North or South of the Equator. |
Longitude | Angular distance West or East of the prime |
| meridian. |
Navigation | Traveling between two locations on a route with |
| knowledge of the current position in relation to the |
| route. |
Position | Exact map coordinates of a given position. |
Time of Sunrise (tsr) | Time of sunrise based on the current GPS |
| position. |
Time of Sunset (tss) | Time of sunset based on the current GPS |
| position. |
Time to Waypoint (ttw) | Estimated travel time to the next waypoint based |
| on the current speed. |
UTC offset | UTC means Universal Time, Coordinated. There |
| are 25 standard time zones around the world that |
| are all an integer offset of hours to |
| |
| offset +5 hours, have local time 17:00 (or 5:00 |
| PM). There are also some countries/places not |
| using the standard time zones, they might be e.g. |
| 5 hours and 45 minutes ahead of UTC. |
Universal Transverse Mercator (UTM) A grid system where the world is divided into 60
Waypoint | Position coordinates on a course stored in the |
| Suunto X9 memory. |
WGS 84 | |
| reference system (map datum) which defines the |
| shape of an earth ellipsoid, its angular velocity, |
| mass, and gravity. |
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