The Greenwich Meridian separates east from west in the same way that the Equator separates north from south. Its linked with Greenwich Mean Time, it also sits at the centre of our system of time zones. Its path is determined by the location of an historic telescope, the Airy Transit Circle, which is housed at the Royal Observatory, In Greenwich. The Meridian passes through England, France, Spain, Algeria, Mali, Burkina Faso, Togo, Ghana and Antarctica.
The international date line Is an imaginary line on the surface of the earth made by the international Meridian Conference, it runs from the north to the south pole and demarcates one calendar day from the next, it passes through the pacific ocean following the 180° longitude is passes around some territories and island groups. The IDL is on the opposite side of the Earth to the Prime Meridian. The Prime Meridian is used to define Universal Time and is the meridian from which all other time zones are calculated. The IDL and the moving point of midnight separate the two calendar days that are current somewhere on Earth. However, during a two-hour period between 10:00 and 11:59 each day, three different calendar days are in use. This is because of daylight saving in the zone and the use of additional date-shifted time zones in areas east of the 180th meridian. These additional time zones result in the standard time and date in some communities being 24 or 25 hours different from the standard time and date in others.
A time zone is a region that has a uniform standard time for legal, commercial, and social purposes. It is convenient for areas in close commercial or other communication to keep the same time, so time zones tend to follow the boundaries of countries and their subdivisions. Most of the time zones on land are offset from Coordinated Universal Time by a whole number of hours but a few are offset by 30 or 45 minutes.Some higher latitude countries use daylight saving time for part of the year, typically by changing clocks by an hour. Many land time zones are skewed toward the west of the corresponding nautical time zones. This also creates a permanent daylight saving time effect.
A Meridian is a circle of constant longitude passing through a given place on the earth's surface and the terrestrial poles.
A family travels from New York to Pakistan to visit family. local time in New Your is 2pm when they leave New York, They're time would be 12pm when they have arrived at Pakistan and they travelled to the east, they didn't cross the international date line and travelled 10 time zones, the time difference in each locations is 10 hours, the travel total time would take 2 hours and 15 minutes to Dubai then have a stop for 1 hour and 35 minutes waiting time then 13 hours and 45 minutes to get to their destination in total 17 hours and 45 minutes.
A business traveller travels from South Korea to Vancouver for a business meeting the time in South Korea is 9am when he leaves South Korea the time differences is 8pm the previous day, they would travelling from east to west, yes they would be crossing the international date line, 8 different time zones, the flight took 10 hours and 40 minutes.
A couple from London go on a romantic break to Sydney, The time in London when they leave is 10.30pm, they had travelled in the east, they would not cross the international date line, it was 10 different time zones, 6:30am the next day, it would take 21 hours and 37 minutes.
Jet lag is a several days of fatigue one feels when travelling rapidly across many time zones, it is due to an out of phase daily rhythm or body clock, the more time zones you cross the longer and the negative effects stay, although sleep is very important, jet lag it not due to just a lack of sleep or lost sleep during your travel and this lost sleep can be easily made up in the first 1-2 days while jet lag lasts much longer.
it is known that it takes longer to adjust or recover from jet lag when travelling East to west, part of the reason why is because our daily rhythm is not exactly 24 hours but is longer, most of nus will find it easier to stay up a bit later or then going to bed early, when you travel west you must stay up later, travelling east is the exact opposite you must force yourself to go to bed earlier and get up earlier.
you can fly north or south as far as you want, while your exhausted from your travel, a simple good nights sleep will quickly be solved, you have changed time zones, so your body is still working on the same schedule as the environment within you have travelled to.
it is useful to make conscious before to adjust sleep to local time, planning a light flight the first day or two to allow for tiredness, taking an afternoon nap (traveling eastward) will help you to stay awake until a more appropriate bedtime the first evening, taking B-Complex vitamins in the morning and a melatonin pill at bedtime may also help you reset your inner clock.
A family travels from New York to Pakistan to visit family. local time in New Your is 2pm when they leave New York, They're time would be 12pm when they have arrived at Pakistan and they travelled to the east, they didn't cross the international date line and travelled 10 time zones, the time difference in each locations is 10 hours, the travel total time would take 2 hours and 15 minutes to Dubai then have a stop for 1 hour and 35 minutes waiting time then 13 hours and 45 minutes to get to their destination in total 17 hours and 45 minutes.
A business traveller travels from South Korea to Vancouver for a business meeting the time in South Korea is 9am when he leaves South Korea the time differences is 8pm the previous day, they would travelling from east to west, yes they would be crossing the international date line, 8 different time zones, the flight took 10 hours and 40 minutes.
A couple from London go on a romantic break to Sydney, The time in London when they leave is 10.30pm, they had travelled in the east, they would not cross the international date line, it was 10 different time zones, 6:30am the next day, it would take 21 hours and 37 minutes.
Jet lag is a several days of fatigue one feels when travelling rapidly across many time zones, it is due to an out of phase daily rhythm or body clock, the more time zones you cross the longer and the negative effects stay, although sleep is very important, jet lag it not due to just a lack of sleep or lost sleep during your travel and this lost sleep can be easily made up in the first 1-2 days while jet lag lasts much longer.
it is known that it takes longer to adjust or recover from jet lag when travelling East to west, part of the reason why is because our daily rhythm is not exactly 24 hours but is longer, most of nus will find it easier to stay up a bit later or then going to bed early, when you travel west you must stay up later, travelling east is the exact opposite you must force yourself to go to bed earlier and get up earlier.
you can fly north or south as far as you want, while your exhausted from your travel, a simple good nights sleep will quickly be solved, you have changed time zones, so your body is still working on the same schedule as the environment within you have travelled to.
it is useful to make conscious before to adjust sleep to local time, planning a light flight the first day or two to allow for tiredness, taking an afternoon nap (traveling eastward) will help you to stay awake until a more appropriate bedtime the first evening, taking B-Complex vitamins in the morning and a melatonin pill at bedtime may also help you reset your inner clock.