重要纬线:0° 纬线(赤道):刚果盆地、东非高原(维多利亚湖)、马来群岛、亚马逊河口北回归线:撒哈拉中部、红海、阿拉伯半岛中部、印度半岛北部、恒河河口、云南广西广东南部(汕头)、台湾中部、夏威夷群岛、加利福尼亚半岛南端、墨西哥湾中部、古巴以北30°N 纬线:苏伊士运河、波斯湾北部(阿拉伯河口)、青藏高原(拉萨以北)、四川盆地(成都)、长江中下游平原、杭州湾南端(宁波)、密西西比河河口40°N 纬线:南欧三大半岛、黑海海峡、塔里木河、敦煌、嘉峪关、河口、大同、北京、秦皇岛、鸭绿江口(秦岭一淮河:34°N;南岭:26°N;阴山:41°N
Important latitudes: 0° Latitude (equator): Congo Basin, East African Plateau (Lake Victoria), Malay Archipelago, Amazon Estuary Tropic of Cancer: Central Sahara, Red Sea, Central Arabian Peninsula, Northern Indian Peninsula, Ganges Estuary, Yunnan, Guangxi, Southern Guangdong (Shantou), Central Taiwan, Hawaiian Islands, Southern tip of California Peninsula, Central Gulf of Mexico, 30°N north of Cuba Latitude: Suez Canal, Northern Persian Gulf (Arabian Estuary), Qinghai-Tibet Plateau (north of Lhasa), Sichuan Basin (Chengdu), Middle and Lower Yangtze Plain, Southern end of Hangzhou Bay (Ningbo), Mississippi River Estuary 40°N Latitude: Three major peninsulas in southern Europe, Black Sea Strait, Tarim River, Dunhuang, Jiayuguan, Estuary, Datong, Beijing, Qinhuangdao, Yalu River Estuary (Qinling-Huaihe: 34°N; Nanling: 26°N; Yinshan: 41°N
Important latitudes are the equator, the Tropic of Cancer, the Arctic Circle, 30° North and South latitude, 60° North and South latitude, and 90° North and South latitude, a total of 11.
The equator is the 0° latitude, the boundary between the northern and southern hemispheres, and the longest latitude. The area it passes through is mainly a tropical rainforest climate zone.
The Tropic of Cancer and the Tropic of Capricorn are the northernmost and southernmost boundaries where the sun shines directly. They are the boundaries of the tropical range.
The Arctic Circle is the boundary between the frigid zone and the temperate zone, and is also the lowest latitude with polar day and polar night.