Most would recoil in horror at the thought of such a challenge, especially with our freezing winter weather, but ice-cool Dan is not fazed.
The hardy 47-year-old said his inspiration for completing the chilly feat was a friend's 10-year-old son who is living with cancer.
Dan, who will carry a sponsor form in his van on his rounds, said he completed a similar challenge a few years ago to raise money on behalf of his own son Connor, who has myasthenia gravis – a disease that causes the muscles to become weak.
Dan said: "I think anything novel like this, that raises awareness and funds to help those affected by childhood cancer, is worth it."
Homes from Home appeal
Money raised by Dan will go towards CLIC Sargent's Northern Ireland Appeal to provide families with a Home from Home, somewhere to stay when their child is going through treatment at Belfast's Royal Victoria or City Hospitals.
With two children diagnosed here every week, more parents will be faced with the financial burden and added stress of travelling long distances to access treatment for their children. CLIC Sargent's Homes from Home should go some way to alleviating this added pressure.
If you would like to support CLIC Sargent and the Homes from Home Appeal and would like to organise an event in the Armagh or Down area please contact Fiona McCann on: 028 90 725780 or email: email@example.com