If lines of longitude determine time zones then where the lines meet at the poles it must be evry time at once
145182
Some time zone lines do not extend to the poles. There is actually a polar time for the north pole and the south pole. See the link below.
535959
The world is divided into 24 time zones.
223790
there are 24 different time zones.  One for each hour of the day
407575
if your standing excatly at the north or south pole you will be following the GMT zone of 0... same as london time...
538013
it is the International Date Line
984752
Latitude is "imaginary" lines that run around the earth PARALLEL to the equator. They represent degree from the equator to the poles.  For example, the equator is also the zero degree latitude line; the north pole is at 90 degrees or at 90 degrees North Latitude; the south pole is at -90 degrees or 90 degrees South Latitude.  Everything in between can be referenced to these values.\n\nLongitude lines are imaginary lines running from the north pole to the south pole.  These lines are farther apart at the equator and get closer as they approach the poles where they converge (or come together).  Longitudes are usually referenced from Greenwich, England where it has been established as Zero Degrees longitude.  There are 360 degrees (i.e., a complete circle) around the earth, but generally is referenced as 180 degrees East of Greenwich (or +180 degrees) or 180 degrees West of Greenwich (or -180 degrees).\n\nThe degrees are further divided in minutes and seconds, so that there are 60 seconds in a minute and 60 minutes in a degree.  So one might reference a spot as being 35 degrees, 10 minutes, 22 seconds North (often written as 35 deg 10'  22") and 96 degrees, 6 minutes, 30 seconds West (96 deg 6' 30").  \n\nOr those same numbers might be should strictly as decimal degrees such as (using the same example): 35.17278N, 96.10833W.
312852
U.K means united kingdom, if you know your geography then you will know this is part of Europe so you will get an european time zone
775724
It's any time you want! All the time zones come together at both poles, so asking what time it is at the North Pole is like asking which way is north. \nLocal time at all other locations on the Earth's surface is based on the Sun's position relative to the celestial meridian, an imaginary line running north and south directly overhead. Noon is based on when the Sun crosses the local meridian, which also corresponds to its highest point in the sky on a given day. \nAt the North Pole, there is no north/south line that can define a meridian. Also, on any given day the Sun circles the sky at the same apparent altitude. There is no "highest position" to define noon. \nBy convention, I assume it would be convenient to select the prime meridian and its corresponding zulu time as the standard time at either pole.
185180
The earth's shape and rotation make it imposible to have the same amount of light throughout the globe at any particular time, it is day on one side of the world while it's night on the opposing side. Time zoning is meant to give us a reasonably standard method to measure time OF DAY throughout the globe.
907436
yes that is true\n\nClick on your clock on your pc then click time zones, it will show you all of them
605919
one does not exist IN the other, both are dimensions that we travel though, we are always moving though space and time. an analogy on the earth would be asking if the lines of latitude exsist in the grid of longitude or if latitude is the grid and longitude fits inside, there is no answer to that question, but we have no problem moving though latitude and longitude.
1050320
Since there are 27 integer time zones (from GMT - 12 hours to GMT + 14 hours), there's no way the whole world can have the same date at the same time, because there will always be points that are more than 24 hours apart, and those points (at least) will be in different days.
91114
Lines of latitude go around the earth from east to west and are all parallel to each other.  They tell pilots, sailors, etc. how far they are north or south of the equator and how far they are from the north or south pole.  The equator is sort of the main line of latitude.  \n\nLines of longitude go from north to south and each one passes through both the north and south pole, so they are not parallel to each other.  The main line of longitude is called the Prime Meridian and it passes through Greenwich, England.  That is also the line on the earth that is used to determine time zones.\n\nThink of a peeled grapefruit or an orange. The segments of the grapefruit are sort of like the lines of longitude.  But if you cut the grapefruit through the middle like you do if you eat it for breakfast the cut that you make is sort of like the equator, the main line of latitude.\n\nHope this helps.
223500
>There are 24 longitudinal divisions of Earth's surface in which a standard time is kept, the primary division being that bisected by the Greenwich meridian. Each zone is 15° of longitude in width, with local variations, and observes a clock time one hour earlier than the zone immediately to the east.Under this scheme, local time is always close to mean solar time, while comparing the time in different places is a simple matter of adding or subtracting whole hours. However, the one hour separation is not universal and,the shapes of time zones can be quite irregular because they usually,but not always,follow the boundaries of states,countries or other administrative areas.Some states do have more than one time zone.
1187
Each country is in charge of determining time zones and each have passed laws to create them. They chose where they should go so that noon would basically coincide with the sun's highest point in the sky.
15290
Not every latitude gets a minute every day. Some get more, some get less. But daylight starts increasing immediately, as the previous answer said.
585641
Different timezone most likely