daylight saving

I have a friends ETX 105 on loan at the moment and during a dry run set up I
realised I need to know when are we in 'daylight saving' in the UK.

"Tony" wrote in message
.uk...
I have a friends ETX 105 on loan at the moment and during a dry run set up
I
realised I need to know when are we in 'daylight saving' in the UK.


Why? The universe doesn't know we use daylight saving and so the stars
don't suddenly jump in position. Just work in UT (GMT) all the time and
everything will be just fine. (In fact with a polar aligned GOTO system you,
don't even need a particularly accurate time to locate the stars. My system
was 25 hours out for weeks before I noticed!)

The same goes for this obsesion with GOTO manufacturers adding GPS systems.
Except for tracking satellites (and perhaps the odd near miss asteroid) the
only additional information your position on earth tells you is where your
horizon is.

Robin

All true but, if you use the time of day on your clocks now and set Daylight
Saving to on or yes this offsets the use of British Summer Time until the
end of the month when the clocks fall back to GMT. Then have Daylight
Savings off. Otherwise leave off and work in Greenwich Mean Time or UT all
the time.
"Robin Leadbeater" wrote in message
...

"Tony" wrote in message
.uk...
I have a friends ETX 105 on loan at the moment and during a dry run set
up
I
realised I need to know when are we in 'daylight saving' in the UK.


Why? The universe doesn't know we use daylight saving and so the stars
don't suddenly jump in position. Just work in UT (GMT) all the time and
everything will be just fine. (In fact with a polar aligned GOTO system
you,
don't even need a particularly accurate time to locate the stars. My
system
was 25 hours out for weeks before I noticed!)

The same goes for this obsesion with GOTO manufacturers adding GPS
systems.
Except for tracking satellites (and perhaps the odd near miss asteroid)
the
only additional information your position on earth tells you is where your
horizon is.

Robin

"Tony" wrote in message
.uk...
I have a friends ETX 105 on loan at the moment and during a dry run set up
I realised I need to know when are we in 'daylight saving' in the UK.




Normally last Sunday in March to last Sunday in October.
Switch forward (in March) from 2am to 3am, and back (in Oct) from 3am to
2am.

JRS: In article ,
dated Sat, 15 Oct 2005 08:25:41, seen in news:uk.sci.astronomy, Tony
posted :

I have a friends ETX 105 on loan at the moment and during a dry run set up I
realised I need to know when are we in 'daylight saving' in the UK.

Listen to the BBC World Service, or read
URL:http://www.merlyn.demon.co.uk/uksumtim.htm
URL:http://www.merlyn.demon.co.uk/js-clndr.htm
URL:http://www.merlyn.demon.co.uk/js-date2.htm
or
URL:http://europa.eu.int/smartapi/cgi/sga_doc?smartapi!celexapi!prod!
CELEXnumdoc&lg=EN&numdoc=32000L0084&mo del=guichett"
title="#" 32000L0084 - Ninth Directive 2000/84/EC of the European
Parliament and of the Council of 19 January 2001 on summer-time
arrangements.

In the EU, Summer Time is used from the last Sunday in March until
the last Sunday in October. The changes occur, in all member countries,
at 1 a.m. GMT/UTC (legally, UK time is GMT-based). UTC differs from GMT
by less than a second.

Alternatively, see whether mid-day (half-way between sunrise and sunset)
is before or after 12:30 local time. I think that always works in
London, but may need adjustment for those in or near the Celtic Fringes.

--
© John Stockton, Surrey, UK. Turnpike v4.00 MIME. ©
Web URL:http://www.merlyn.demon.co.uk/ - w. FAQish topics, links, acronyms
PAS EXE etc : URL:http://www.merlyn.demon.co.uk/programs/ - see 00index.htm
Dates - miscdate.htm moredate.htm js-dates.htm pas-time.htm critdate.htm etc.

JRS: In article , dated Sat, 15 Oct
2005 12:52:22, seen in news:uk.sci.astronomy, dylan
posted :

"Tony" wrote in message
o.uk...
I have a friends ETX 105 on loan at the moment and during a dry run set up
I realised I need to know when are we in 'daylight saving' in the UK.

Normally last Sunday in March to last Sunday in October.
Switch forward (in March) from 2am to 3am, and back (in Oct) from 3am to
2am.

Why change an hour later than the rest of us?

ISTR that we did use those times a couple of decades or so ago.

--
© John Stockton, Surrey, UK. Turnpike v4.00 MIME. ©
Web URL:http://www.merlyn.demon.co.uk/ - FAQqish topics, acronyms & links;
Astro stuff via astron-1.htm, gravity0.htm ; quotings.htm, pascal.htm, etc.
No Encoding. Quotes before replies. Snip well. Write clearly. Don't Mail News.