North Korea's Pyongyang Time: A Political Time Zone

On August 15, 2015, North Korea turned its clocks back 30 minutes to create Pyongyang Time (PYT) at UTC+8:30, splitting from the UTC+9 zone shared with South Korea and Japan. The move was explicitly political: August 15 is the anniversary of Korea's liberation from Japanese colonial rule, and North Korea framed the new time zone as erasing a legacy of Japanese imperialism.

Introduction

The experiment lasted less than three years. On May 5, 2018, ahead of a historic inter-Korean summit, North Korean leader Kim Jong-un ordered clocks moved forward 30 minutes to return to UTC+9, realigning with South Korea. The brief existence of Pyongyang Time stands as one of the most overtly political time zone changes in modern history.

The Creation of Pyongyang Time

• Date Created: August 15, 2015
• Offset: UTC+8:30
• Stated Reason: Erase legacy of Japanese colonialism
• Previous Offset: UTC+9 (same as South Korea and Japan)

North Korea's state media announced the change as a rejection of the UTC+9 time zone that Imperial Japan had imposed on Korea in 1912, replacing the country's traditional UTC+8:30 offset. Before Japanese colonization, the Korean Peninsula had indeed used a time zone closer to UTC+8:28, based on the longitude of Seoul (126.98°E).

The choice of August 15 was loaded with symbolism. It marks the anniversary of Japan's surrender in 1945, which ended 35 years of colonial rule over Korea. By creating Pyongyang Time on this date, North Korea was making a statement about national sovereignty and cultural independence, using the clock itself as a tool of political expression.

Practical Consequences

• Inter-Korean Gap: 30 minutes between North and South
• Kaesong Industrial Complex: Workers operated on two different clocks
• International Coordination: Added complexity to already limited contacts

The 30-minute split created immediate practical problems. The Kaesong Industrial Complex, a joint North-South economic zone just inside North Korean territory, had South Korean managers and North Korean workers operating on different clocks. Television and radio broadcasts that could be received across the border were now offset by 30 minutes.

For the few international organizations operating in North Korea, the change required updating all schedules and communications. Airlines flying to Pyongyang had to adjust their timetables. The Red Cross and other humanitarian organizations coordinating across the border faced additional scheduling complexity in an already challenging environment.

The 2018 Reversal

• Date Reversed: May 5, 2018
• Context: Ahead of inter-Korean summit at Panmunjom
• New Offset: Back to UTC+9
• Kim Jong-un Quote: "There was no reason to have two clocks on the wall"

In April 2018, Kim Jong-un met South Korean President Moon Jae-in at the historic Panmunjom summit, the first inter-Korean summit in over a decade. According to South Korean officials, Kim was moved when he noticed two clocks on the wall at the Peace House, one showing Pyongyang Time and one showing Seoul time, and remarked on the sadness of the divided clocks.

Days later, North Korea announced it would return to UTC+9 on May 5, 2018. The reversal was framed as a gesture of goodwill toward inter-Korean cooperation, turning a previously nationalistic time zone change into a symbol of potential reconciliation. The move was widely seen as a diplomatic signal ahead of the planned summit between Kim and US President Donald Trump.

Historical Context of Korean Time

• Pre-Colonial: UTC+8:28 (based on Seoul longitude)
• Japanese Colonial Era: UTC+9 imposed in 1912
• Post-Liberation: Both Koreas kept UTC+9
• Pyongyang Time: UTC+8:30 (2015-2018 only)

Before Japanese colonization, Korea used a time based on the longitude of Seoul's royal observatory, giving an offset of approximately UTC+8:28. When Japan annexed Korea in 1910, it initially allowed the existing time to continue, but in 1912 it imposed Japanese Standard Time (UTC+9) to unify the colonial empire under a single clock.

After liberation in 1945, both North and South Korea kept UTC+9 despite its colonial origins. South Korea briefly experimented with UTC+8:30 from 1954 to 1961 before reverting to UTC+9 for practical reasons, mainly to maintain alignment with Japan, its largest trading partner. North Korea kept UTC+9 until the 2015 change.

Time Zones as Political Tools

• Other Political Changes: Spain (1940), Samoa (2011), Crimea (2014)
• Symbolism: Time zones signal sovereignty and alignment
• Trend: Countries increasingly use time as a political statement

North Korea's Pyongyang Time experiment is the most dramatic modern example of using time zones for political purposes, but it is not unique. Spain switched from Greenwich time to Central European Time in 1940 to align with Nazi Germany and never changed back. When Russia annexed Crimea in 2014, clocks were immediately moved from UTC+2 to UTC+3 to match Moscow time.

Time zone changes carry powerful symbolic weight because they affect every person's daily routine. They are a visible, inescapable reminder of political authority. North Korea's creation and abolition of Pyongyang Time within three years demonstrated both the power and the limits of using the clock as a political instrument.

Key Facts

• North Korea created Pyongyang Time (UTC+8:30) on August 15, 2015, the 70th anniversary of liberation from Japan.
• The time zone was abolished on May 5, 2018, returning North Korea to UTC+9 to match South Korea.
• Before Japanese colonization in 1912, the Korean Peninsula used a time close to UTC+8:28.
• Kim Jong-un reportedly decided to reverse the change after seeing two clocks on the wall at the Panmunjom summit.
• South Korea itself used UTC+8:30 from 1954 to 1961 before reverting to UTC+9.

Fun Facts

• Pyongyang Time lasted exactly 993 days, from August 15, 2015 to May 5, 2018.
• North Korea is one of very few countries to have created and then abolished a time zone in the 21st century.
• The two clocks at the Panmunjom Peace House that reportedly moved Kim Jong-un were labeled "Pyongyang" and "Seoul."
• South Korea briefly considered creating its own unique time zone in 2013 but dropped the idea after public opposition.

Final Thoughts

Pyongyang Time was a brief but revealing chapter in the history of time zones. It showed that even something as seemingly neutral as the time on a clock can be charged with political meaning. North Korea's creation and abandonment of its own time zone within three years demonstrated that while time zones can be powerful symbols of sovereignty, practical considerations and diplomatic realities often outweigh symbolic gestures.