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Conclusions from 2.1


The length of the day changes from place to place and from season to season. The table below shows the times of sunrise and sunset on a certain day in August in certain cities of the world. Latitude is the angular distance of a place north or south of the earth's equator, usually expressed in degrees and minutes. The table also shows the latitudinal positions of these cities.

Table 2.1

City Sunrise time (in hours) Sunset time (in hours) Latitude
Tokyo 4:50 18:45 35$^\circ $ 41' N
New Delhi 5:53 18:55 28$^\circ $ 36' N
Johannesburg 6:45 17:40 26$^\circ $ 12' N
London 5:30 20:45 51$^\circ $ 30' N
New York 5:55 19:59 40$^\circ $ 42' N
Los Angeles 6:05 19:50 34$^\circ $ 3' N
Adelaide 6:45 17:55 34$^\circ $ 56' N

Figure 2.1

Based on figure 2.1, what conclusion can be drawn?


Variation in the length of day is more in London than Los Angeles.


The longest day of the year in Los Angeles is in July and the longest day of the year in London is in June.


The longest days of the year in Los Angeles and London are in July.


Los Angeles always has a shorter day than London.