S
Simon Brooke
Guest
in message <[email protected]>, Simon Mason
('[email protected]') wrote:
>
> "Tom" <Don'[email protected]> wrote in message
> news:[email protected]...
>> Completely off topic question for anyone on here who has navigation
>> skills.
>>
>> At 2.30 this afternoon, the sun was shining directly in line with the
>> path down the middle of my allotment.
>>
>> Co-ordinates
>> Lat: 52:13:08N (52.219)
>> Lon: 2:12:57W (-2.2159)
>>
>> Is my allotment facing SW or SSW?
>>
>> There is a bottle of Newcastle Brown Ale resting on the outcome.
>>
>
> At noon 1200 UTC, the Sun will be directly South and at 1800 UTC it will
> be directly West.
Errr... no it won't. The sun will on average be due south at local noon,
which isn't the same as UTC unless you're on the Greenwich meridian, and
he is 2 degrees and almost 13 minutes west of Greenwich. And the transit
of the sun is not clockwork - the exact time the sun is due south varies a
few minutes either side of local noon.
> At 1500 UTC it will be directly South West and SSW will occur at 1330, so
> at 1430 it is nearer SW.
Errr... no it won't. It would if the Earth were flat and the Sun was
infinitely distant, but neither of these things are true.
--
[email protected] (Simon Brooke) http://www.jasmine.org.uk/~simon/
;; An enamorata is for life, not just for weekends.
('[email protected]') wrote:
>
> "Tom" <Don'[email protected]> wrote in message
> news:[email protected]...
>> Completely off topic question for anyone on here who has navigation
>> skills.
>>
>> At 2.30 this afternoon, the sun was shining directly in line with the
>> path down the middle of my allotment.
>>
>> Co-ordinates
>> Lat: 52:13:08N (52.219)
>> Lon: 2:12:57W (-2.2159)
>>
>> Is my allotment facing SW or SSW?
>>
>> There is a bottle of Newcastle Brown Ale resting on the outcome.
>>
>
> At noon 1200 UTC, the Sun will be directly South and at 1800 UTC it will
> be directly West.
Errr... no it won't. The sun will on average be due south at local noon,
which isn't the same as UTC unless you're on the Greenwich meridian, and
he is 2 degrees and almost 13 minutes west of Greenwich. And the transit
of the sun is not clockwork - the exact time the sun is due south varies a
few minutes either side of local noon.
> At 1500 UTC it will be directly South West and SSW will occur at 1330, so
> at 1430 it is nearer SW.
Errr... no it won't. It would if the Earth were flat and the Sun was
infinitely distant, but neither of these things are true.
--
[email protected] (Simon Brooke) http://www.jasmine.org.uk/~simon/
;; An enamorata is for life, not just for weekends.