||The invention of electricity has pervasively challenged our evolutionary adaptation of dusk to down limited light exposure leading to a conflict between our endogenous biological clocks and the environmental time thus posing a significant health concern. This study therefore explored sleep timing habits, light at night exposure and awareness of its health effects among staff and students of Basic Medical Sciences Faculty of Bayero University, Kano. Data were obtained using a semi- structured, interviewer assisted data capturing form while analysis was done using the statistical package for social sciences (SPSSV20.0) software. Quantitative data were summarized using mean±SD while qualitative data were summarized using frequencies and percentages. Independent samples t- test and person’s Chi-square were used to compare discrete and categorical variables respectively, in all cases, statistical significance was considered at P ≤ 0.05. The results indicated that all the respondents were exposed to LAN. The mean duration of LAN exposure was found to be 5.2±1.4 hours. Late retirement to bed was observed higher among male gender with male students sleeping at 00:21±1.4 hrs and female staff sleeping at 22:20±1.5 hrs. Bivariate analysis reveals a strong positive relationship between LAN exposure duration and sleep timing (r=+0.802; p=0.001) as well as sleep duration (r=-0.552; 0=0.001). On the other hand, awareness about the health effects of LAN exposure was observed to be low (17.4%) among the respondents with staff being more aware (38.5%) than students (9.1%). Finding of the present study shows that the respondents are highly exposed to LAN, had less sleep and lower awareness of the consequences of LAN exposure.