British Sumer Time Note

[Cobbs]

There are two systematic errors at play there, firstly GMT is the average (hence the "mean") local time as obserbed at Greenwich. Since the majority of the country is to the west of Greenwich it follows that locally observed solar time trails GMT.

The second is that a day is not of constant length. Leave aside the natural variation in the speed of the Earth's rotation due to ocean and atmospheric currents and tidal effect, those are quite small compared that caused by the fact the Earth's orbit is an ellipse rather than a circle. As a result geometery changes (how many times the Earth must rotate for the Sun to return to its highest point) and it also moves faster around the Sun when it is closer to it (in December).

For those reasons sunrise and sunset would never perfectly centre themselves around noon. It's also why if you count the days between the spring and autumn equinoxes you find that "winter" (in the northern hemisphere) is actually several days shorter than "summer".

"About" was the key word there, also the "London" ...

 

[Inspector]

Saskatchewan doesn't do the clock switching thing like the rest of Canada does. There is a state or two in the US that doesn't either. Don't have to change up the clocks or any of that nonsense. The dogs still bug us to be feed all the time, earlier the better. I only notice the time differences it when I want to call someone and have to consider their time zone.

Now if you want to ponder something ask yourself what time it is in Newfoundland? They are half an hour different from the rest of North America and they observe DST too!

Pete

 

[stuart little]

Here we move the clocks forward at 3 am on 4 am.
How is in other countries?

I moved my clock forward, & it fell off the mantlepiece!

 

[stuart little]

Saskatchewan doesn't do the clock switching thing like the rest of Canada does. There is a state or two in the US that doesn't either. Don't have to change up the clocks or any of that nonsense. The dogs still bug us to be feed all the time, earlier the better. I only notice the time differences it when I want to call someone and have to consider their time zone.

Now if you want to ponder something ask yourself what time it is in Newfoundland? They are half an hour different from the rest of North America and they observe DST too!

Pete

No wonder they're the 'brunt' of jokes from the rest of NA!

 

[dzj]

This year I changed the time on the dashboard clock. I felt quite tech-savvy.

 

[Phil Pascoe]

The clocks in our cars over the years have always stayed on GMT - we've never worked out how to change one.

 

[Phill05]

I moved my clock forward, & it fell off the mantlepiece!

Don't worry about it it will Fall back.

 

[stuart little]

This year I changed the time on the dashboard clock. I felt quite tech-savvy.

You didn't "See paradise by the light of the dashboard light," while you were doing it, did you?

 

[dzj]

You didn't "See paradise by the light of the dashboard light," while you were doing it, did you?

At my age, it's as close as you get to automotive bliss.

 

[bansobaby]

I used to live in The Gambia.

There, GMT stood for Gambia Maybe Time.

 

[stuart little]

They use Zulu time in RSA, so I hear.

 

[spiritburner]

Can't be many building site joiners on these forums, ever tried fitting a roof an hour and a half before sunrise? without daylight saving the winter solstice falling on Dec 21st would mean sunrise is at 09:22

We do have electricity now and things called lights. ButI like the reply you gave!!

 

[Jaco]

They use Zulu time in RSA, so I hear.

Down South we just cannot grasp this very weird custom of changing the time on clocks.
If it is 08:00AM it stays 08:00AM in summer and winter.

 

[stuart little]

I still know when it's beer o'clock.

In the words of Graucho:- "I don't drink wine or beer until it's time - IT'S TIME!"

 

[stuart little]

At my age, it's as close as you get to automotive bliss.

"You took the words right out of my mouth!"

 

[artie]

"You took the words right out of my mouth!"

Must have been when you were kissing ..er him.

 

[Yojevol]

Down South we just cannot grasp this very weird custom of changing the time on clocks.
If it is 08:00AM it stays 08:00AM in summer and winter.

I'm reading Michael Moseley's book on Better Sleeping at the moment (boy do l need it). In it he refers to effects of the hour change. Apparently 1.5billion people in 70 countries change their clocks twice a year. This disturbance causes a significant 24% increase in heart attacks associated with adding the extra hour and a 21% increase on removing the hour.
Brian

 

[Inspector]

I'm reading Michael Moseley's book on Better Sleeping at the moment (boy do l need it). In it he refers to effects of the hour change. Apparently 1.5billion people in 70 countries change their clocks twice a year. This disturbance causes a significant 24% increase in heart attacks associated with adding the extra hour and a 21% increase on removing the hour.
Brian

So are you saying if you might have a heart condition you should let someone else in the house change the clocks?

Pete

 

[Yojevol]

So are you saying if you might have a heart condition you should let someone else in the house change the clocks?

Pete

If you're that worried you're probably not going to last the hour anyway

 

[highwood122]

young children walking to school in daylight if possible is one sensible reason