Years ago road construction workers stated their work day at night time. The politics was for the convenience of the commuter. That was and is a lie. The reason was the heat and the workers ability to conduct themselves in their jobs. 

The modern world needs to begin to address a work day and make it a work night. 

The downside of such change is the increased energy demand that is new to the nighttime lifestyle. That is why we need alternative energies in far larger measure than we have today. 

Turbines don't stop turning when the sun sets. Solar batteries don't lose their charge simply because the sun won't be available for a few nighttime hours. On the other hand, the energy demand may be less considering the need for air conditioning to live will be far less than today.

Decisions have to be made to invoke movement of an entire country that won't like it because their circadian rhythms are out of sync.

STRESS. Besides the heat related deaths, there will be increased deaths due to the very stress people will have when life takes on new paradigms.