<p>Your maths is not detailed, but you have the correct answer.</p>

<p>The Earth rotates at 15 degrees per hour (360 degrees/24 hours).</p>

<p>The time required to rotate 10 degrees is 10/15 = 0.666 hours, which is 40 minutes.</p>

CC BY-SA 3.0
2017-11-19T19:38:43.763Z
Well, "correct" until you consider governments messing around with things like time zones and Daylight Savings Time. at which point this could be better answered on Law.se :-(  Oh, and then there's the question of whether 25E and 15E are at the same latitude.  If it's winter and 15E is far enough north, the sun will not rise at all.
jamesqf
CC BY-SA 3.0
2017-11-29T06:28:10.057Z
The sun-rise time will be 6:50 at 15 degrees east longitude provided both the places are at same latitude.
Harish
CC BY-SA 3.0
2017-11-19T11:10:10.267Z
2017-11-19T11:10:10.267Z
Fred
<p>I've a question about time calculating.</p>

<blockquote>
  <p>The sun rises up at <strong>7:30</strong> in <strong>25°E</strong>, What time will the sun rise up in
  <strong>15°E</strong>?</p>
</blockquote>

<p>What I've tried</p>

<p>$$25° - 15° = 10°$$</p>

<p>By the way</p>

<p>$$10° . 4 = 40 \space \text {minutes}$$ </p>

<p>However, it seems wrong. </p>

CC BY-SA 3.0
2017-11-19T09:10:27.223Z
Why does it seem wrong?
bon
<geography><homework><sun><time>
The sun rises up at 7:30 in 25°E, What time will the sun rise up in 15°E?
Mark
# The sun rises up at 7:30 in 25°E, What time will the sun rise up in 15°E?

(Asked by: username_0 on 2017-11-19)

I've a question about time calculating.

> The sun rises up at **7:30** in **25°E**, What time will the sun rise up in
> **15°E**?

What I've tried

$$25° - 15° = 10°$$

By the way

$$10° . 4 = 40 \space \text {minutes}$$

However, it seems wrong.

**Tags:** geography, homework, sun, time

> **Comments:**
> **username_1**: Why does it seem wrong?  

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## 1 answers

### Answer by username_2 on 2017-11-19. Score: 1

Your maths is not detailed, but you have the correct answer.

The Earth rotates at 15 degrees per hour (360 degrees/24 hours).

The time required to rotate 10 degrees is 10/15 = 0.666 hours, which is 40 minutes.

> **Comments:**
> **username_3**: Well, "correct" until you consider governments messing around with things like time zones and Daylight Savings Time. at which point this could be better answered on Law.se :-(  Oh, and then there's the question of whether 25E and 15E are at the same latitude.  If it's winter and 15E is far enough north, the sun will not rise at all.  
> **username_4**: The sun-rise time will be 6:50 at 15 degrees east longitude provided both the places are at same latitude.  

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