This can take some time, so when you store the address in the database it makes sense to store the longitude and latitude of the address along with it.
这需要一些时间，所以，在数据库中存储地址时，必须同时存储地址的经度和纬度。
2
The latitude and longitude of the airports was readily available, though. So using the latitude and longitude we were able to discover what time zone the airports were in using a time zone vector map.
To modern time measure, people divide the surface of the earth into 24 time zones according to longitude lines. This method was established by the International longitude Conference in 1884.