Hi. Can anyone help please? I need to know how to calculate the time
of sunset (using BST) on 2nd September, 2006 at Lat: 54:07:15 N,
Lon: 1.11.52 W.
Any offers?
Thanks

Bardo1ph wrote:
Hi. Can anyone help please? I need to know how to calculate the time
of sunset (using BST) on 2nd September, 2006 at Lat: 54:07:15 N,
Lon: 1.11.52 W.

You posted this to an astronomy group. What is the panic? I am sure
there will be an answer in plenty of time.

Consult an Ordinance Survey map to get an height for the location as
the variation of time with height is something in the region of 3
degrees for evry 50 feet IIRC. (If that equates to 15 degrees an hour,
it might be important.)

(And that is only for the observer. Check out the effects of the height
above sea level the observed horizon will be. Beware of dips and hills
too. Sunsets seem to follow them for some reason. They can be awkward
buggers Stars can. I think its all the sex and drugs.*)

Of course on a plain with no altitude as from a window or whatever the
equation is moot. If a rough estimate will do then it is about four
minutes past 6 that evening. I dare say the point at which the sun sets
is important too, so if there are houses and trees in the way you had
best get hold of a theodolite.

Have you posted to a surveyor's forum?

There is no BST on the Almanac I was using. I dare say you can work
that out for yourself. I would only get it wrong were I to do it for
you.

*Though I dare say you already knew that. If you didn't then a rock and
roll forum might help.

Bardo1ph wrote:
Hi. Can anyone help please? I need to know how to calculate the time
of sunset (using BST) on 2nd September, 2006 at Lat: 54:07:15 N,
Lon: 1.11.52 W.
Any offers?
Thanks


http://www.britishinformation.com/su...-sunset-times/

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"Bardo1ph" wrote in message
oups.com...
Hi. Can anyone help please? I need to know how to calculate the time
of sunset (using BST) on 2nd September, 2006 at Lat: 54:07:15 N,
Lon: 1.11.52 W.
Any offers?
Thanks

About 1854 GMT

to do it for yourself try http://aa.usno.navy.mil/data/docs/RS_OneYear.html

Peter

Peter McLelland wrote:
"Bardo1ph" wrote in message
oups.com...
I need to calculate the time
of sunset (using BST) on 2nd September, 2006 at Lat: 54:07:15 N,
Lon: 1.11.52 W.

About 1854 GMT

to do it for yourself try http://aa.usno.navy.mil/data/docs/RS_OneYear.html

Peter

Many thanks Peter - your link let me do the calculation too.
18.54 it is.

Bardo1ph

Peter McLelland wrote:

About 1854 GMT

That'll teach me not to be clever.

For some reason I was on the 20th. So what is it in BST?

"Weatherlawyer" wrote in message
ups.com...

Peter McLelland wrote:

About 1854 GMT

That'll teach me not to be clever.

For some reason I was on the 20th. So what is it in BST?

Go on I'll give you three guesses.

Peter

Felly sgrifennodd Bardo1ph :
Hi. Can anyone help please? I need to know how to calculate the time
of sunset (using BST) on 2nd September, 2006 at Lat: 54:07:15 N,
Lon: 1.11.52 W.
Any offers?

If you're running UNIX/Linux, install Xephem. That'll tell you more than you
ever wanted to know about what's happening in the heavens above your location
- for free.

Adrian

--
Adrian Shaw ais@
Adran Cyfrifiadureg, Prifysgol Cymru, aber.
Aberystwyth, Ceredigion, Cymru ac.
http://users.aber.ac.uk/ais/weather/ uk

Adrian D. Shaw wrote:
Felly sgrifennodd Bardo1ph :
Hi. Can anyone help please? I need to know how to calculate the time
of sunset (using BST) on 2nd September, 2006 at Lat: 54:07:15 N,
Lon: 1.11.52 W.
Any offers?

If you're running UNIX/Linux, install Xephem. That'll tell you more than you
ever wanted to know about what's happening in the heavens above your location
- for free.

I have just been trying tp load and run Alcyon but I have a registry
problem I think. I keep meaning to install a linux disk but I am on AOL
and loath to leave it.

How easy is it to run tables with?

Peter McLelland wrote:
"Weatherlawyer" wrote in message
ups.com...

Peter McLelland wrote:

About 1854 GMT

That'll teach me not to be clever.

For some reason I was on the 20th. So what is it in BST?

Go on I'll give you three guesses.

No thanks, I need two.