I-Longitude kanye ne-latitude kuyisistimu yokuxhumanisa eyakhiwe yi-longitude kanye ne-latitude, uhlelo lokuxhumanisa oluyindilinga olusebenzisa indilinga ye-degrees ezintathu zesikhala ukuchaza isikhala emhlabeni, futhi lungaphawula noma yisiphi isikhundla emhlabeni.
1. Ukuhlukaniswa kwe-longitude: kusukela ku-meridian eyinhloko, ama-degree angu-180 empumalanga abizwa ngokuthi i-longitude yasempumalanga, emelelwa ngu-“E”, kanti ama-degree angu-180 entshonalanga yi-longitude yasentshonalanga, emelelwa ngu-“W”. 2. Ukuhlukaniswa kwe-latitude: ama-degree angu-0 kuya enkabazwe, ama-degree angu-90 enyakatho naseningizimu, ukufundwa kweNyakatho naseningizimu ama-degree angu-90, i-latitude yasenyakatho ivezwa ngu-“N”, kanti i-latitude yaseningizimu ivezwa ngu-“S”. 3. Ukubhala yi-latitude yokuqala ngemva kwe-longitude, ehlukaniswe yi-comma, njenge-longitude kanye ne-latitude yokubhala yaseBeijing: ekubhalweni yi-degrees ezingu-40 enyakatho ye-latitude, ama-degrees angu-116 empumalanga ye-longitude; Ngezinombolo nangezinhlamvu kungu-: 40°N, 116°/E.