skewing of timezones, Equation of time
Nov. 1st, 2009 04:53 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
guslimage of the day:
Difference between sun time and clock time during daylight saving time:
I always found strange how Spain insists on being GMT+1 (which is perfect for more Eastern countries such as Austria and Česko) despite being West of Britain... Presumably, the UK, being powerful and isolated by water, didn't feel the pressure to conform. I wonder when and how Portugal decided to join the UK with GMT.
---
Here's another, which I haven't fully grasped yet:
Equation of time
<< The equation of time is the difference between apparent solar time and mean solar time, both taken at a given place (or at another place with the same geographical longitude) at the same real instant of time. >>
The equation of time — above the axis the dial will appear fast, and below the dial will appear slow.
| 0h ± 30m | |
| 1h ± 30m ahead | |
| 2h ± 30m ahead | |
| 3h ± 30m ahead |
Difference between sun time and clock time during daylight saving time:
I always found strange how Spain insists on being GMT+1 (which is perfect for more Eastern countries such as Austria and Česko) despite being West of Britain... Presumably, the UK, being powerful and isolated by water, didn't feel the pressure to conform. I wonder when and how Portugal decided to join the UK with GMT.
---
Here's another, which I haven't fully grasped yet:
Equation of time
<< The equation of time is the difference between apparent solar time and mean solar time, both taken at a given place (or at another place with the same geographical longitude) at the same real instant of time. >>
The equation of time — above the axis the dial will appear fast, and below the dial will appear slow.