The council is showing respect for those who fought and died during World War One on its one hundredth anniversary.
Derbyshire Dales District Council is supporting Lights Out from 10pm to 11pm on August 4 when everyone in the UK is invited to turn off their lights, leaving on a single light or candle for a shared moment of reflection.
The poignant event marks the centenary of the outbreak of the Great War and people can take part in whatever way they choose, either individually or by attending one of the many events being organised around the country for a collective experience.
The authority will be turning off the lights at its Matlock Town Hall headquarters, leaving on a single light in a civic office that overlooks the town centre.
Lights Out is the headline project of 14-18 NOW, the official cultural programme for the First World War Centenary Commemorations.
For more information about Lights Out events in the area, search the map on the project website www.1418NOW.org.uk/lightsout