On the Spanish mainland (the official time with 1 or 2 hours in advance, correction of meridians: 0 in 0º longitude): add the difference of hours (what is in hand or nearby) with Greenwich: 9h48m + 4h = 13h 48m. That`s half a day according to our clock (which is available or nearby) in a place with a longitude of 33 degrees from the Eastern Hemisphere (remember, with an accuracy of 30 minutes, because the sun is not always at its peak above 12:00). For more precision, ship captains use astronomical tables. With such a band structure, standard time cannot deviate from local time by more than 30 minutes. However, the theoretical limits of the belt are only observed in seas, oceans©and sparsely populated areas. In fact, the borders of the belt are set by the governments of the countries, taking into account administrative, geographical and economic particularities. Summer. In order to save electricity in night lighting, the clock was set on the territory of the USSR 1 hour before standard time. Initially, this time was only introduced in summer (daylight saving time), but by decree of 1931 it was eventually abandoned. That is, daylight saving time is the standard time of 1 hour.
(5) EoT is not an “equation” to be used (mathematical) and has been known by this name for centuries, understood as “equation” (from the Latin “aequatio”) by “correction” (its astronomical meaning in the RAE dictionary), which it does by algebraically correcting the mean solar time to obtain the actual solar time. Standard time zones and time. It is almost impossible to use local time, which is different at each point of daily life. For simplicity worldwide, use zone time. For this purpose, as you know, the globe was conventionally divided by meridians into 24 bands (depending on the number of hours in a day) into time zones (each 15° longitude). At all points on a belt, it was agreed that time should be considered equal. At standard time, the local time of the meridian is taken, which passes through the middle of this belt (middle meridian). If Indiana can have two time zones, there`s no reason why Russia, 180 times larger and with several million people, can`t change its clocks to please its eastern citizens. S. saved energy by starting daylight saving time three weeks ago.
Nepal is 15 minutes ahead of India and one hour and 15 minutes behind China. Iran cannot decide what© to do with the summer day, its parliament wants to respect it and President Mahmoud Ahmadinejad says no. After all, ©time is really relative. (4) In medieval Europe, they did not use the temporary hours inherited from antiquity in vertical sundials, but simplified them in an unorthodox way with the simple division into equal parts of each other on the clock face (equal hours). In addition, of the twelve daily sections and to indicate the time of worship services in monasteries and monasteries, as a rule, only the lines corresponding to prima, tercia, sexta, nona and vespers (grouping of hours) have been drawn, a nomenclature leading to the so-called canonical hours. These sundials were made on walls with a vertical gnomon and a circular or semicircular shape, many of which were roughly engraved. The values found show the local time difference on the meridians followed by©Kiev, Lvov and Donetsk. To determine the legal time of each region, it is necessary to be based on a specific meridian, but not on a time zone. Therefore, attempting to determine the time of a time zone in the same way that it is determined by the central meridian of the specific area does not produce positive results because it is not applicable to practice.
Similarly, if we divide the 360 geographical meridians (one per degree of circumference of the earth) by 24 (the hours of the day), we obtain that in each hour that passes, the sun has traveled 360/24 = 15 meridians; That is, one meridian every 4 minutes. Therefore, to discuss the topic of work ± sleep or rest and the translation of hours, we will not talk about real solar and sidereal (astronomical) times. We will only work with mean solar time, which is taken for the calculation of time on Earth. If the length of the day is not calculated from one day, but on average 1 year±o. local time – the time of the observer on the given meridian, and meridians are innumerable, and local times are countless. But all observers of the same meridian have the same local time. Greenwich Time is the local time of an observer on the Greenwich meridian. Since the Greenwich meridian is assumed to be the origin of longitude on the globe, Greenwich local time differs exactly in the longitude of the place, converted from a one-hour angle measurement at a rate of 360 degrees = 24 hours. There is a saying: “Western longitude, Greenwich best time. East longitude, Greenwich Minimum Time. Which, in any translation, means that with east longitude you have more time than Greenwich and with west longitude less time than Greenwich. Tracking of the south vertical clock for latitude 46º N with temporary hours grouped as canonical (design by Mauro Giongo, 2021) At the top of the following figure, you can see the comparison of the paths of a southern vertical clock for a latitude of 30º N, the difference between the hours is all the greater the higher the latitude. The gnomon (rod) represents the temporary and equiangular hours perpendicular to the dial and the hours of sunshine parallel to the Earth`s axis.
Below is also a horizontal clock with an invalid equiangular path. But there is a small approach: on ± twelfth central meridian, the longitude is 180 degrees©, and part of its belt is located in the eastern hemisphere, and the other in the west. The time on the clock of the inhabitants of this region is the same, but the number in the calendar for the inhabitants of the Eastern and Western hemispheres is different and differs by 1 day. The inhabitants of the Western Hemisphere yesterday compared the inhabitants of the eastern part of the earth to us. And the meridian is called the date line. The position of Ukraine in terms of time zones is convenient: 95% of its territory is located in the second zone, only Luhansk and parts of the Donetsk and Khairkov regions – in the 3rd belt, and an insignificant part of the Transcarpathian region – in the first belt. In practice, however, for the sake of simplicity, the boundaries of time zones are not drawn strictly along the meridians, but taking into account the boundaries of the state. Therefore, the entire territory of Ukraine is assigned to the second time zone. Standard time in our country is the middle time of the second meridian zone (30), which almost crosses Kiev. Therefore, in Ukraine, the belt is also©called Kiev. If you want to describe the corresponding time on a day, then it is obvious for the state of sun. But as it varies from place to place on Earth, some legends.
First, you enter real solar time. To start the day at 0 o`clock, add another 12 hours. The same true solar time exists everywhere in length. Because of Earth`s eclectic and eclectic orbit, but it doesn`t work uniformly. Therefore, the average sun is determined, which moves around the equator at a constant angular velocity and takes the same time as the real sun for the eclectic. The introduction and abolition of summer time is done synchronously by most Europeans. The EdT can be displayed as part of the analemma diagram by placing it on its horizontal axis (east-west component), or alone to see its evolution over time. When shown separately, it is customary to indicate the days of the year on the “x” axis (horizontal or cross-sectional) and the EdT (the advance or delay of the sun or solar time compared to their annual average) on the “y” axis (vertical or axial). Example: 33 degrees east longitude, Moscow time, i.e. Greenwich 4 hours.
a) If it is 12 noon in Kiev, the local time in Donetsk is 4.