Practice SVIP

The Earth rotates on its axis. It takes 24 hours to turn. It means that the time isn't the same in different parts of the world.

Until the 19th century, towns in the same country often had different times. This was because people told the time by the local position of the sun. It didn't matter because people didn't travel very much and they travelled very shortly.

However, all that changed when railways arrived. People could now travel quickly from town to town, so they needed a standard time. In 1884, countries agreed to an international time system with 24 time zones.

The time zones start from the Prime Meridian at Greenwich in London. All places east of Greenwich are later, all places west of Greenwich are earlier.

Most countries are in one time zones, but some large countries have more than one. The USA has a lot of time zones. When it's 9 a.m in New York, it's only 6 a.m in Los Angeles. Australia has three time zones and Russia has eleven!

The system of time zones starts in Greenwich. On the other side of the word is the International Date Line. When you cross the line, you don't just change hours, you change days. So you can travel from today back to yesterday!

The Earth rotates on its axis. It takes 24 hours to turn. It means that the time isn't the same in different parts of the world.

Until the 19th century, towns in the same country often had different times. This was because people told the time by the local position of the sun. It didn't matter because people didn't travel very much and they travelled very shortly.

However, all that changed when railways arrived. People could now travel quickly from town to town, so they needed a standard time. In 1884, countries agreed to an international time system with 24 time zones.

The time zones start from the Prime Meridian at Greenwich in London. All places east of Greenwich are later, all places west of Greenwich are earlier.

Most countries are in one time zones, but some large countries have more than one. The USA has a lot of time zones. When it's 9 a.m in New York, it's only 6 a.m in Los Angeles. Australia has three time zones and Russia has eleven!

The system of time zones starts in Greenwich. On the other side of the word is the International Date Line. When you cross the line, you don't just change hours, you change days. So you can travel from today back to yesterday!

The Earth rotates on its axis. It takes 24 hours to turn. It means that the time isn't the same in different parts of the world.

Until the 19th century, towns in the same country often had different times. This was because people told the time by the local position of the sun. It didn't matter because people didn't travel very much and they travelled very shortly.

However, all that changed when railways arrived. People could now travel quickly from town to town, so they needed a standard time. In 1884, countries agreed to an international time system with 24 time zones.

The time zones start from the Prime Meridian at Greenwich in London. All places east of Greenwich are later, all places west of Greenwich are earlier.

Most countries are in one time zones, but some large countries have more than one. The USA has a lot of time zones. When it's 9 a.m in New York, it's only 6 a.m in Los Angeles. Australia has three time zones and Russia has eleven!

The system of time zones starts in Greenwich. On the other side of the word is the International Date Line. When you cross the line, you don't just change hours, you change days. So you can travel from today back to yesterday!

The Earth rotates on its axis. It takes 24 hours to turn. It means that the time isn't the same in different parts of the world.

Until the 19th century, towns in the same country often had different times. This was because people told the time by the local position of the sun. It didn't matter because people didn't travel very much and they travelled very shortly.

However, all that changed when railways arrived. People could now travel quickly from town to town, so they needed a standard time. In 1884, countries agreed to an international time system with 24 time zones.

The time zones start from the Prime Meridian at Greenwich in London. All places east of Greenwich are later, all places west of Greenwich are earlier.

Most countries are in one time zones, but some large countries have more than one. The USA has a lot of time zones. When it's 9 a.m in New York, it's only 6 a.m in Los Angeles. Australia has three time zones and Russia has eleven!

The system of time zones starts in Greenwich. On the other side of the word is the International Date Line. When you cross the line, you don't just change hours, you change days. So you can travel from today back to yesterday!