The flow of time is unidirectional and none of the present science or any other disciple can make it move otherwise. Therefore, the concept of prison time was developed, which strictly means to lose something which is irreversible, i.e., the time. Apart from time, a prisoner loses his family and carrier. He can always get access to family temporarily in jail and get his carrier back on track after doing time. Nonetheless, he can never get his time back. Currently, for security reasons, the prisoners are kept under longer than the natural illumination or sometimes under continuous illumination. This exposure to continuous light is not only limited to the prisoners, but also to peoples who are innocent until proven guilty in court and the staffs dealing with the prisoners. Recent findings have shown that continuous or long illumination can cause serious behavioural and physiological repercussions including cancer [1,2]. The prisoners, apart from time, are also exposed to harmful lighting. Before the light exposure, the law has never subjected prisoners to any other toxicant which are capable to harm the prisoner even after finishing their sentence. In this expression of concern, I would like to recommend a few guidelines to manage the issue of artificial illumination in jail.