That's called the "prime meridian".
The 30-degree line of longitude passes through North America, Africa, and Australia.
47 degree
Saint Sulpice Church
Spain lies on zero degree longitude line together with France.
Longitude passing Through Centre of India is at 82 and a 1/2 degree east.
yes Florida and Hawaii
No, neither of those does.
Mainly the 180 degree line.
The 0 degree longitude goes through all Greenwich Meantime Countries. These are, in order of north to south:United KingdomFranceSpainAlgeriaMaliBurkina FasoTogoGhanaIt also passes through Antartica.
The 180 degree longitude is often miscalled international date line, when it is actually called the Anti Meridian.The date line is not a meridian or line of longitude because it is not a straight line as it deviates to separate geographical places, certain island groups for instance.See the link below for an image.The longitude that runs through Greenwich England is the prime meridian, which is 0 deg longitude.
The International Date Line corresponds closely, but not exactly, to the 180 degree line of longitude.
They sit at the 40 degree East line of longitude.