What should have been done ages ago has been sent to different ministries for opinion. This is not the Friday/Sunday issue to be debated upon. If you want to save energy by closing down shops and businesses at 8 pm, then adopt the day light saving scheme to save further. Pushing the clock in summer by one hour, you actually save daylight.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/day-light-saving-scheme
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/new-age-bangladesh
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-efficiency
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/electricity
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bangladesh
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-kingdom-uk
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us