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sunrise/sunset charts for London 2017


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 available here. 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 disclaimer!

Please also download the instruction page (190k).


2017:

2018:

These charts have been generated by our own proprietary software running on an Iyonix workstation.


Disclaimer

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 2017