For a chance to win a short break, we want you to take a photograph that illustrates best what Northern Ireland means to you.
All photographs, however, have to be taken on just one day this summer – Saturday, June 29.
Belfast Telegraph picture editor Gerry Fitzgerald said One Summer's Day has generated thousands of great images over the last three years.
"The idea behind the competition is that as many people as possible across the country go out on June 29 and take a photograph of somewhere in Northern Ireland that is important to them," he explained.
"It may involve people or pets, it may be an action shot, or it may just be a beautiful scenic photograph. It's really up to the individual photographer."
The top 100 photographs selected will be included in a special commemorative supplement which will be produced and distributed inside the Belfast Telegraph in September.
Competition entries will be split into three categories – one for primary school children, one for secondary school children, and a third category for everyone else. It is important that entrants clearly mark their age and category when submitting their entry. Closing date for entries is Saturday, July 13, with winners announced in September.
Ahead of the big day on June 29 the Telegraph and NITB are asking readers to tell us where in Northern Ireland you would like to photograph and why.
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