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10 years on Image

10 years on

March 2009, Issue 40
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Away from the desk Image

Away from the desk

The little bent tree
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Chamber update Image

Chamber update

The Summer Campaign
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Docklander Image

Docklander

Mona’s enjoying her upside down life
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Docklands Secrets Image

Docklands Secrets

Politician disrespects us
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Fashion Image

Fashion

Top five street style trends
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Health and Wellbeing Image

Health and Wellbeing

Flexibility, mobility and wellbeing
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Letters Image

Letters

Well done Sam
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New Businesses Image

New Businesses

70 years later, family business still suits
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Owners Corporation Law Image

Owners Corporation Law

Boom, boom, bust and out -
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Pets Corner Image

Pets Corner

She’s the boss, and I like it!
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SkyPad Living Image

SkyPad Living

Energy vulnerable vertical villages?
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Street Art Image

Street Art

Goodbye from Blender Studios
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We Live Here Image

We Live Here

Cladding, short-stays and rooming
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Docklands Secret - September 2012

28 Aug 2012

Docklands Secret - September 2012 Image

When does civil twilight end?

It seems that Docklands urban artwork Civil Twilight End is somewhat noisier than initially intended.

The bell tower, situated at the corner of Bourke and Village streets in Batman’s Hill, was commissioned by Equiset, as part of the Docklands Urban Art Program.

The artwork, curated by Simon Maidment of Satellite Art Projects, is designed to ring at the moment civil twilight ends – the time at which the sun has dropped six degrees below the horizon.

Docklands News was under the impression that the bell was meant to ring once. In fact, an article published on the Satellite Art Projects website before the artwork was installed states the same.

“The bell housed in the tower will ring once per day, at the moment of Civil Twilight End, when the sun had disappeared from view but while the sky is still illuminated by it,” the article states.

However, Docklands News has noticed that the bell is now ringing three times in a row to mark the end of civil twilight. When we asked Mr Maidment about the extra ringing, he said the bell was set to ring three times, each ring being five seconds apart.

He said this was how the artists, Kate Daw and Stewart Russell, had wanted the bell to function. What confused us was, which of these three bells signals the end of civil twilight. Is it the first, second or third?

Mr Maidment said it was the first of the three bells that marked the end of civil twilight in the “area”.

“More accurately, it’s the moment of civil twilight end for the ‘area’ to an accuracy of degrees, minutes and seconds of latitude and longitude, and hours and minutes in clock-time resolution,” Mr Maidment said. 

Mr Maidment explained that the moment of civil twilight was not necessarily a second long but, rather, a block of time and the calculations used to determine this period of time related to an area rather than a spot.

This means that the length of civil twilight end changes throughout the year as the sun moves away from the area faster or slower depending on its distance.

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