In 2016, two Johns Hopkins economists, Steve Hanke and Dick Henry, published a proposal to abolish time zones worldwide and put the entire planet on a single Universal Time (UTC). Their argument was simple: in a globally connected world, time zones create unnecessary confusion, scheduling errors, and economic friction. Just put everyone on the same clock. The idea generated debate in academic circles and media attention, but is it actually a good idea? The answer depends on which problems you are trying to solve and how much widespread disruption you are willing to accept in return.
The case for abolishing time zones
The strongest argument for universal time is the elimination of conversion errors. If a meeting is scheduled for 15:00 UTC, everyone on Earth knows exactly when that is, with no math required. International financial markets, already heavily reliant on UTC, would benefit from clearer coordination. Software developers would be freed from an enormous source of bugs (timezone handling is one of the most error-prone areas in programming). Travel scheduling would become simpler: a flight departing at 09:00 and arriving at 17:00 is an 8-hour flight, period, no timezone adjustment needed. And the biannual confusion of Daylight Saving Time transitions would vanish entirely. Proponents also point out that much of the world already operates on de facto universal time in certain domains: aviation uses Zulu time, financial markets reference UTC for settlement, and software systems store timestamps in UTC by default.
The case against
The practical objections are substantial. Under universal time, the number 12:00 would no longer mean "roughly midday" everywhere. In London, noon would still be lunch. In New York, noon would be early morning (currently 7:00 AM EST). In Tokyo, noon would be late evening (currently 9:00 PM JST). Entire populations would need to learn new associations between clock numbers and daily activities. "I start work at 23:00" would be a perfectly normal statement in some parts of the world. Business hours, school schedules, and social norms are all built around the assumption that certain clock numbers correspond to certain positions of the sun. Rewriting those expectations for billions of people is not a software update. There is also the question of dates: if it is 23:00 UTC on Tuesday when you eat breakfast in Tokyo, what "day" are you having breakfast on? The intuitive connection between calendar dates and lived experience would fracture.
The China precedent
China offers a real-world example of what happens when a wide geographic area uses a single time zone. Officially, all of China runs on UTC+8 (Beijing Time). In practice, western regions like Xinjiang operate on unofficial local time that is two hours behind Beijing. People adapt, but the adaptation creates dual schedules, confusion for visitors, and an ever-present gap between official time and solar reality. Extending this to the entire planet would multiply these effects enormously. Imagine every country effectively running two systems: the official UTC clock and an informal local schedule based on when the sun actually rises and sets.
A middle ground: fewer zones, not zero
Some proposals suggest reducing the number of time zones rather than eliminating them entirely. The EU has debated dropping DST and potentially consolidating its three time zones into two or even one. India already uses a single zone for the entire subcontinent. Reducing from the current 38+ distinct UTC offsets to, say, 12 (one for every two hours) would simplify conversions while still keeping clock numbers roughly aligned with solar position. This compromise would address many of the scheduling headaches without requiring people to learn entirely new associations between clock time and daily life. The EU's effort, which began in earnest in 2018 after a public consultation that drew 4.6 million responses (the largest ever for an EU consultation), has stalled over disagreements about whether countries should lock to permanent summer or winter time.
What is actually likely to happen
Full abolition of time zones is extremely unlikely in the foreseeable future. The infrastructure of daily life (from train schedules to TV programming to labor laws) is deeply embedded in local time. Governments have little incentive to undertake the massive coordination effort required, especially when the benefits accrue mostly to international businesses and software developers rather than to the general public. What is more likely is a gradual shift toward UTC in technical and international contexts (which is already happening), while local time continues to govern daily life. The interesting frontier is space: as humans establish bases on the Moon and Mars, new timekeeping systems will be needed, and the conversation about universal time may take on new urgency in those off-world contexts. For now, the messy patchwork of 38+ UTC offsets, DST rules, and political exceptions is likely to persist. It is inefficient, confusing, and occasionally absurd, but it reflects the deeper truth that humans experience time locally, and no amount of global coordination can change the fact that the sun rises in the east.