Question

how many longitude are there​

Answer 1

Explanation:

There are 360 longitudes

Answer 2

Answer:

There are 360 degrees of longitude. These are your main lines of Longitude. Each degree is composed of 60minutes. Each minute is composed of 60 seconds. One may if one wished break the seconds down into decimal points of a second.

The Prime meridian is 0 every line East of it (PM) up to the 180 is counted as East Longitude. Every line West of the Prime Meridian is counted as West Long. the 180 can be counted as either East or West Longitude. The 180 deg of longitude also roughly serves as the International Date Line. Although it alters either West or East of the 180 longitude to accommodate geographic locations of nations and island groups to keep them on the same day etc. The new day begins and ends on the date line. When you cross the dateline going West you advance into tomorrow, When you cross the dateline going East you revert to Yesterday. This is a bit of a puzzle at first. It was first shown to be required when Magellans ship lost a day upon doing a circumnavigation