Accurate Sunrise / Sunset Times

[S. Gonzales Esq.]

If I wanted to know the exact time of sunrise or sunset on a particular day for a particular location, how should I go about finding out?

There are numerous online resources that I've tried and I've even got an app on my iPhone that does it, but the problem is that none of them agree.

Is the Met Office website the one I should trust?

[Gene Vincent]

Look up the standard times for the UK which are based on the '0' degree meridian.

Find your location east or west of that meridian, 15 degrees equals 1 hour, 1 degree equal 4 minutes. there are 60 minutes in a degree and each minute equals four seconds.

The reality is that due to elevation and surrounding countryside anything to more than quarter a degree is going to be largely academic.

Examples. SR Greenwich 05.34am BST your location E 1 deg 35 min 29sec...

The 'E' means it will occur after the Greenwich ('W' mean before) so at the location in my example sunrise will be sometime between 05.40am and 05.41am, but if in a valley or where there are hills to the west of you it might be a few minutes later, if you up high with fabulous views to the west then earlier than either time I've given.

Hope that helps.

[jmorgan]

Something like stellarium or heavens above? You enter your location, I assume it uses that for working out what is what where in the heavens. Need good timing for some star gazing or satellite watching.

[don4l]

Try this.

http://www.ap-i.net/skychart/en/download

It will give you all the information that you want.

It gives "Sunset", "Nautital Twilight" and "Astrononomical Twilight" times.

Don
--

[S. Gonzales Esq.]

Thanks for all that - heavens-above.com seems to be the most accessible, and closely matches the data from the Met Office site.

[aw51 121565]

Gene Vincent said:

Look up the standard times for the UK which are based on the '0' degree meridian.

Find your location east or west of that meridian, 15 degrees equals 1 hour, 1 degree equal 4 minutes. there are 60 minutes in a degree and each minute equals four seconds.

The reality is that due to elevation and surrounding countryside anything to more than quarter a degree is going to be largely academic.

Examples. SR Greenwich 05.34am BST your location E 1 deg 35 min 29sec...

The 'E' means it will occur after the Greenwich ('W' mean before) so at the location in my example sunrise will be sometime between 05.40am and 05.41am, but if in a valley or where there are hills to the west of you it might be a few minutes later, if you up high with fabulous views to the west then earlier than either time I've given.

Hope that helps.

The sun rises in the East, so if we are further East the sun rises at an earlier time.