What is the time difference between China and Spain?

Seven hours.

China is located in the East Eighth Zone (UTC/GMT+08:00), which is a time zone 8 hours ahead of Coordinated Universal Time (UTC)/Greenwich Mean Time (GMT). When GMT is 0:00 At , the standard time in Dongba District is 08:00.

Spain is in the East Zone (UTC/GMT+01:00), which is a time zone 1 hour ahead of Coordinated Universal Time (UTC)/Greenwich Mean Time (GMT). When GMT is 0:00 , the standard time in East District 1 is 01:00.

So the time difference between China and Spain is seven hours, but Spain uses daylight saving time in the summer, and the time has to be accelerated by one hour, so the difference with China is six hours.

Extended information:

Time zone calculation:

As the earth rotates, the sun rises in the east and sets in the west during the day. When the sun passes the highest point in the sky of a certain place, it is the The local time is 12 o'clock, so different longitudes have different local times.

At the "International Longitude Conference" in 1884, the longitude measured by the Greenwich Observatory was determined to be the zero-degree longitude. The relevant international conference decided to divide the earth's surface according to the longitude from east to west, with an area every 15 degrees. , so that there are 24 areas in one zone, and the time difference between adjacent areas is 1 hour.

People at the east end and west end of the same area can see the sun rising at most 1 hour apart. When people cross an area, they correct their clocks by one hour (subtract one hour to the west, add one hour to the east), and add or subtract a few hours when crossing several areas.

Many countries also adopt Daylight Saving Time (DST). For example, the United States implements Daylight Saving Time from April to September every year, and the time is advanced by one hour.

Baidu Encyclopedia - Time Difference

Baidu Encyclopedia - The People's Republic of China

Baidu Encyclopedia - Spain