Singleton's iconic sundial was lit up in yellow, green and red for around an hour last night.
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And no one, members of local council included, could work out why.
Commuters, ranging in age and numbers, pulled over on Ryan Avenue and Gowrie Street to take photos of the unique display.
Though the main lights were switched back on at 9.30pm; the discussions continued until the middle of the night on the Singleton & Surrounds Noticeboard NSW Facebook page.
"Its the colours of Archie’s, it’s got to do with them reopening," said one gentleman.
"So (that) you can tell the time at night," another replied.
One Singleton Councillor added, "Sorry I’ve got no clue, it was beautiful though."
An anonymous source has since revealed to the Singleton Argus that the lighting of the world famous Singleton sundial was in honour of his/her Lithuanian heritage.
The Baltic nation celebrated 29 years of independence from the Soviet Union last night and, as a result, Lithuanians from across the world celebrate the March 11 (1990) date.
The three colours (yellow, green and red) on the nation's flag represent the sun, the nation's forests & nature and the blood shed by those who have died for Lithuania throughout history.
"Many world Lithuanian communities including Chicago and New York united with city officials to light up sky-scrapers for March 11," the source explained.
"Whereas this (experiment) only cost $2.50 worth of material from North Home Variety store in the Gowrie Street mall.
The source continued, "I watched on from afar last night, taking pleasure in people's enjoyment while (at the same time) monitoring the coloured cellophane wrap which covered the light."
"The lights and warm weather also mixed well with my spotify list which was a mix of Aussie legend Paul Kelly and his Lithuanian equivalent Marijonas Mikutavičius."
For the next hour Chicago's landmarks, including the Hancock Center and the Navy Pier Centennial Wheel, are currently displayed in the three colours.
America's Windy City is known to have the most Lithuanian descendants in the world outside of the nation itself.
While Sydney, Melbourne, Geelong and Adelaide all have active Lithuanian communities it is believed that Singleton - with a modest population of 22,000 - has taken the (Sakotis) cake for this year!