The djs_sunshafts.rar file you have requested: Clear Sky / Mods / Singleplayer / DJ's Sunshafts - 2.2kb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R.: Clear Sky and upload any files you want to share or are missing. This is the only information we could locate:
This mod will add sun shafts from 6AM to 8AM, 11AM to 1PM and 6PM to 8PMThe sun shafts get brighter in the middle of said times and then dull down towards the end.