In this Act references to time of day are references to Indian Standard Time, being five and a half hours ahead of Greenwich Mean Time :
Provided that for any area in which Indian Standard Time is not ordinarily observed the State Government may make rules-
(a) specifying the area,
(b) defining the local mean time ordinarily observed therein; and
(c) permitting such time to be observed in all or any of the factories situated in the area.
