The Prime Meridian, ie 0 degrees longitude, runs through the London suburb of Greenwich.
Greenwhich England
the angular distance of a place east or west of the meridian at Greenwich, England, or west of the standard meridian of a celestial object, usually expressed in degrees and minutes
The prime meridian passes through Greenwich, England.
The standard meridian time for Europe is Greenwich Mean Time (GMT)
The Prime Meridian runs through London so England is on the east and the west of it.
Longitude measures the angular distance of a place east or west of the meridian at Greenwich, England, or west of the standard meridian of a celestial object, usually expressed in degrees and minutes.
No, they are not same.
37 degree 37 minutes
without standard meridian there would be no longitudes, proper time,
The Prime Meridian runs through Greenwich, England.
The significance of standard meridian of India is that Standard meridian is used as the standard time for whole country. If it isn't there chaos will be created in the country so standard time is very important.
The 0° meridian runs through England - roughly through Greenwich. On the opposite side of the Earth is the 180° meridian - which is about as far from England as you can get. The closest the 180° meridian runs to anything related to England is when it passes a bit east of New Zealand, which is part of the Commonwealth of Nations (Formerly British Commonwealth) which includes England.