Xiao Ming used his summer vacation to travel to Japan and took a photo of the scenery of Mount Fuji. The photo was taken at 8:15 (Beijing time). At this time, Tokyo (East Kowloon)

C

Test question analysis: Xiao Ming used his summer vacation to travel to Japan and took a landscape photo of Mount Fuji at 8:15 (Beijing time). Since Tokyo (East 9th District) is located in the east of Beijing (East 8th District), according to the time zone conversion principle of "east plus west minus", it is now 9:15 am in Tokyo (East 9th District).

Comments: This question is not difficult. It tests time zone conversion through scenario setting.

Methods and techniques The steps for calculating the time zone using the formula method are roughly as follows:

The first step is to find the time zone: that is, knowing the longitude of a certain place, find the time zone of that place. The conversion formula is: (longitude of a certain place + 7.5°) ÷ 15 = the time zone of the place (the result is an integer and the remainder is discarded). If the desired land is east longitude, then the east time zone is obtained; if the desired land is west longitude, the west time zone is obtained. For example, to find the time zone where 130°E is located, use the formula method to solve as follows: (130° + 7.5°) ÷ 15 = 9.2. Take the integer 9 and discard the remainder 2. The time zone where this place is located is East Nine District.

The second step is to find the zone time difference: there are two ways to find the zone time difference.

A. Both places are in the Eastern Time Zone or the Western Time Zone, then: zone time difference = (number of major time zones – number of hour zones) × 1 hour;

B. One of the two places If one place is in the Eastern Time Zone and one place is in the Western Time Zone, then:

Zone Time Difference = (Number of Eastern Time Zones + Number of West Time Zones) × 1 hour (not including the date line)

Or Zone Time Difference =[(12-Eastern time zone number)+(12-Western time zone number)]×1 hour (crossing the date line);

The third step is to find the zone time: the calculation of zone time can be divided into two types Situation: crossing the date line or not crossing the date line.

Except for the date line: A. The desired regional time = known regional time + zone time difference (the desired time zone is east of the known time zone);

B. The desired regional time =Known regional time - Zone time difference (the requested time zone is west of the known time zone);

Crossing the date line: A. The desired regional time = Known regional time + Zone time difference - 1 day (the desired time zone is west of the known time zone) The time zone is east of the known time zone);

B. The required regional time = the known regional time - the zone time difference + 1 day (the desired time zone is west of the known time zone).

The fourth step is to add the journey time if there is flight time (i.e. journey time).