sunrise/sunset charts for London 2018
Use these charts to work out the mystery of the sun's movement through the seasons!
Each of the charts is centred on a Wednesday, however give seven days information, i.e. they run from Sunday to Saturday.
The Solar Location Diagram in each case is for the Wednesday, however the azimuths and
times don't change that much from one day to the next (if you require astronomical
accuracy, you are in the wrong place!).
The charts are provided in PDF format, for which you may require a free reader
Each of the charts is a 140k download.
The charts are provided to be of use to film-makers and photographers, and do
not have the accuracy that astronomers would require. Although they have
been proved accurate for most practical purposes, if your use is critical in
any way, do us and yourself a favour by reading our
Please also download the instruction page (190k).
These charts have been generated by our own proprietary software
running on an Iyonix workstation.
The primary purpose of these pages is as a reckoner, and
they are not designed to be used in situations where the
azimuth or time of sunrise or sunset is critical.
Nonetheless for most practical purposes the results can be
relied upon, but bearing in mind the following points:
1) The azimuths of sunrise and sunset are accurate for an observer standing at
sea level and looking at a nautical horizon. It is important
to note that allowance must be made for elevation above sea
level and local horizon (e.g. mountains, buildings etc). The
angle of the sun's movement is oblique to the horizon in
northern and southern latitudes, particularly in summer; the
apparent azimuth of sunrise/sunset will thus vary according
to local conditions. This effect is least important near to
the equator, where the sun effectively rises and sets at
right angles to the horizon.
2) The compass angles (azimuths) given include compensation
for the compass declination for London: in other words, they
are accurate when using a magnetic compass
(see the tutorial for an explanation
of magnetic declination). No allowance has been made for refraction,
which varies according to climate and local weather conditions.
For true accuracy, there is no substitute for personal
observation. Whilst it is true that Astronomical Institutes
will supply accurate azimuths in degrees, minutes and
seconds, local conditions as described above will affect the
usefulness of the result. It is better to use these figures
as a rough guide and then arrange to be there on the spot
ready to respond to local conditions.
© Kell Gatherer