How long will a Kerosene / Citronella tiki torch burn in one evening?

A Kerosene / Citronella tiki torch will burn 5 to 6 hours in one evening, with the limit being reached as the cotton wick burns down. With the wick raised approximately 1.5” (38mm) above the top brass fitting, the cotton torch wick will burn down throughout the evening, even with torch fuel still in the torch.