How is longitude related to solar time

The net Time Correction Factor in minutes accounts for the variation of the Local Solar Time LST within a given time zone due to the longitude variations within the time zone and also incorporates the EoT above.

The Hour Angle converts the local solar time LST into the number of degrees which the sun moves across the sky. In the morning the hour angle is negative, in the afternoon the hour angle is positive. The calculator below uses Google to determine the time zone from its location.

It will accept any description such as an address, city name, airport code and then show its location on a map. It also determines the most up to date time zone for that location. Summary of finding longitude using time difference example. If Greenwich time UCT is 10 am when it is noon at your location, what is your longitude? Time Time zones are another arbitrary societal choice, like the origin point of the Prime Meridian.

What is the relationship between longitude and time? Are times at places East of your location earlier or later? How about to the West? What is the time difference between Hawai'i and the Prime Meridian in England? Hawai'i and Tokyo? The zone date changes at midnight zone time ZT or when the lower branch of the mean sun transits the central meridian of the zone. ZT is influenced by daylight savings time and geographical boundaries.

Solar time is measured with reference to the true sun or the mean sun. Time may also be measured relative to a fixed point in space. Time measured with reference to the first point of Aries, which is considered stationary although it moves slightly, is sidereal or star time. The first point of Aries is defined as where the sun crosses the equator northbound on the first day of spring. Local sidereal time LST is the number of hours that the first point of Aries has moved westward from the observers meridian.

Expressed in degrees, it equals the local hour angle LHA of Aries. Thus, a given star is in the same position relative to the earth at the same sidereal time each day. The earth revolves around the sun in a year. The number of days in the year equals the number of rotations of the earth during one revolution. The earth rotates eastward about It allows people in different locations to use the same time or to easily convert time from one location to another. In solar time, the sun is always due south or north at exactly noon.