If you tell us the time at either Greenwich or at 74° west, then we
can tell you the time at the other point. They do track together, but
both of them keep changing.
The local time of any place changes by 4 minutes for every degree of longitude that it moves east or west from the Greenwich Meridian.
When it is 12 noon at Greenwich (0 degrees longitude), it is 20 degrees west of Greenwich. Since the Earth rotates at 15 degrees per hour, you can calculate the time difference by dividing 20 degrees by 15, which equals approximately 1 hour and 20 minutes. Therefore, it would be 10:40 AM at the location that is 20 degrees west when it is 12 noon at Greenwich.
Greenwich is at 0 Longitude Dublin, Ireland is at 6 degrees 15 minutes 35 seconds West longitude. There for Dublin is 6 degrees 15 minutes 35 seconds west of Greenwich
The time difference between the local time and Greenwich Mean Time (GMT) is 2 hours. Since there are 360 degrees of longitude in a full circle and 24 hours in a day, each hour of time difference corresponds to 15 degrees of longitude. Therefore, the longitude of the town would be 30 degrees west of the Prime Meridian (Greenwich).
Longitude is the measurement in angular degrees around the globe east or west of Greenwich, England.
The local time of any place changes by 4 minutes for every degree of longitude that it moves east or west from the Greenwich Meridian.
When it is 12 noon at Greenwich (0 degrees longitude), it is 20 degrees west of Greenwich. Since the Earth rotates at 15 degrees per hour, you can calculate the time difference by dividing 20 degrees by 15, which equals approximately 1 hour and 20 minutes. Therefore, it would be 10:40 AM at the location that is 20 degrees west when it is 12 noon at Greenwich.
Because 0 degrees longitude passes through Greenwich - which is a suburb of southeast London. All other lines of longitude are either east or west of Greenwich. All of the worlds time is also measured as being either before or after GMT (Greenwich Mean Time).
Greenwich is at 0 Longitude Dublin, Ireland is at 6 degrees 15 minutes 35 seconds West longitude. There for Dublin is 6 degrees 15 minutes 35 seconds west of Greenwich
The time difference between the local time and Greenwich Mean Time (GMT) is 2 hours. Since there are 360 degrees of longitude in a full circle and 24 hours in a day, each hour of time difference corresponds to 15 degrees of longitude. Therefore, the longitude of the town would be 30 degrees west of the Prime Meridian (Greenwich).
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.
Longitude
The Prime Meridian runs through Greenwich, England, and is defined as 0 degrees longitude. It serves as the starting point for measuring longitude east and west around the globe. Established at the Royal Observatory in 1884, the Prime Meridian is crucial for navigation and timekeeping, as it helps coordinate time zones worldwide.
Greenwich, London is at Longitude 0 and latitude N51.48 degrees. Greenwich is the universal reference point for time zones called Greenwich Mean Time or more commonly GMT. Most time zones are based on this reference as a number of hours and half-hours "ahead of GMT" or "behind GMT".
It is the Prime Meridian, which is zero degrees longitude, and runs from the North Pole, through the Royal Observatory, Greenwich, London, England, and to the South Pole.
latitude is degrees north or south of the equator and Longitude is degrees east or west of Greenwich
Longitude is the measurement in angular degrees around the globe east or west of Greenwich, England.