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 Meridian 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?

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 a.m. instead of 9 a.m., restaurants were packed at 6 p.m. instead of 7 p.m., 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.

It’s true that larger time zones would seem to cheat many people out of daylight by removing them further from their true solar time. But the demands of global commerce already do that. Many people work in companies with remote offices or have clients in different parts of the country. It’s become routine to arrange schedules to coordinate people in multiple domestic time zones. Traders in California start their day at 5 a.m. to participate in New York markets. True, not all Californians work on East Coast time, but research by economists Daniel Hamermesh, Catlin Meyers, and Mark Peacock showed communities are more productive when there’s more time coordination. Californians who work on Eastern time require services that can accommodate their schedule and see less of their families on Pacific time. Frequent travel between the coasts causes jet lag, robbing employees of productive work time. With a one-hour time difference, bi-costal travel would become almost effortless. It might make international business harder, but it’s hard to say for certain. The east coast would be seven hours behind continental Europe, but one hour closer to time zones in Asia.