I can not find any reference to a Meridian in the Solar System.
In astronomy, there is the Earth's meridian. That's a "great circle" on the "celestial sphere". It passes through the "celestial poles" and also through the "zenith" at the observer's location.
Mean solar time on the prime meridian is known as Greenwich Mean Time (GMT).
The person would experience solar noon 4 minutes earlier for every degree west of the noon meridian they are. So, living 1 degree west of the noon meridian, the solar time would be 4 minutes before noon.
For a person living west of the noon meridian (which is at 0° longitude), solar time would be behind the standard time at that meridian. Specifically, for every degree of longitude west, solar time lags by about four minutes. Therefore, if someone is at a longitude of, say, 75°W, their solar time would be approximately three hours behind noon (75 degrees x 4 minutes per degree = 300 minutes, or 5 hours). This means that if it is noon at the noon meridian, it would be around 7:00 AM solar time for that person.
Greenwich Mean Time or Greenwich Meridian Time (GMT) is the prime meridian located at the former Royal Observatory in Greenwich, England. The start of a solar day originally occurred at noon. But in 1925 the numbering system for GMT was changed, and 0000 GMT now allows the day to begin at midnight.
No. There is one star in our solar system, and no other solar systems within it.
Mean solar time on the prime meridian is known as Greenwich Mean Time (GMT).
Longitude
greenwhich mean time
The person would experience solar noon 4 minutes earlier for every degree west of the noon meridian they are. So, living 1 degree west of the noon meridian, the solar time would be 4 minutes before noon.
a single meridian of longitude
"Our solar system." The "part of our galaxy" that's in our solar system is the solar system.
Our Solar System is called the Solar System, Why?, what do you Aliens call it.
Greenwich Mean Time or Greenwich Meridian Time (GMT) is the prime meridian located at the former Royal Observatory in Greenwich, England. The start of a solar day originally occurred at noon. But in 1925 the numbering system for GMT was changed, and 0000 GMT now allows the day to begin at midnight.
No. There is one star in our solar system, and no other solar systems within it.
The solar system
My solar system (and yours if you are from Earth) is just called "The Solar System".
When the Moon was formed, the Solar System WAS already a solar system.