Allison Schrager proposes that America should end Daylight Saving and consolidate its timezones into just two — the Eastern zone goes back, Central/Mountain do nothing, and Pacific goes forward. She makes a persuasive argument that the nation already conducts its business on coastal time, and cites the safety and coordination costs of losing sleep, de-synchronizing with the rest of the world, and generally suffering from confusion and disorientation from a system designed in 1883.
It sounds radical, but it really isn't. The purpose of uniform time measures is coordination. How we measure time has always evolved with the needs of commerce. According to Time and Date, a Norwegian Newsletter dedicated to time zone information, America started using four time zones in 1883. Before that, each city had its own time standard based on its calculation of apparent solar time (when the sun is directly over-head at noon) using sundials. That led to more than 300 different American time zones. This made operations very difficult for the telegraph and burgeoning railroad industry. Railroads operated with 100 different time zones before America moved to four, which was consistent with Britain's push for a global time standard. The following year, at the International Meridian Conference, it was decided that the entire world could coordinate time keeping based on the British Prime Meridian (except for France, which claimed the Prime Median ran through Paris until 1911). There are now 24 (or 25, depending on your existential view of the international date line) time zones, each taking about 15 degrees of longitude.
Now the world has evolved further—we are even more integrated and mobile, suggesting we'd benefit from fewer, more stable time zones. Why stick with a system designed for commerce in 1883? In reality, America already functions on fewer than four time zones. I spent the last three years commuting between New York and Austin, living on both Eastern and Central time. I found that in Austin, everyone did things at the same times they do them in New York, despite the difference in time zone. People got to work at 8 am instead of 9 am, restaurants were packed at 6 pm instead of 7 pm, and even the TV schedule was an hour earlier. But for the last three years I lived in a state of constant confusion, I rarely knew the time and was perpetually an hour late or early. And for what purpose? If everyone functions an hour earlier anyway, in part to coordinate with other parts of the country, the different time zones lose meaning and are reduced to an arbitrary inconvenience. Research based on time use surveys found American's schedules are determined by television more than daylight. That suggests in effect, Americans already live on two time zones.
Daylight Saving Time Is Terrible: Here's a Simple Plan to Fix It [Allison Schrager/The Atlantic]