City comparison · time difference and converter
Seoul is 15 hours ahead of Leon de los Aldama right now. Leon de los Aldama sits in Mexico on Mexico City; Seoul sits in South Korea on Seoul. They are roughly 11,741 km apart (7,296 mi), a flight of about 14h 49m. Leon de los Aldama's metro holds around 1.6 million people; Seoul's around 25.7 million.
Slot 1
00:00 / 15:00
Leon de los Aldama / Seoul
Partial overlapSlot 2
01:00 / 16:00
Leon de los Aldama / Seoul
Partial overlapSlot 3
09:00 / 00:00
Leon de los Aldama / Seoul
Partial overlapEach row is one hour in Leon de los Aldama. Green rows are inside business hours in both cities; amber means only one side is at their desk; grey rows fall outside business hours in both.
Local Election Day
Seoul, South Korea · 지방 선거일
Wed, Jun 3
Memorial Day
Seoul, South Korea · 현충일
Sat, Jun 6
Great-circle distance
11,741 km
(7,296 mi)
Approximate flight
14h 49m
850 km/h cruise + 1h taxi/climb/descent
Jet lag
15h
Roughly 1 day to adjust per timezone crossed
The heatmap gives you the shape of the day. If you need to convert one specific hour — say a customer call or a release window — open the converter with both cities already loaded.
Open in converter →The difference between Leon de los Aldama and Seoul is not really a number, it's a daily rhythm. Seoul is 15 hours ahead of Leon de los Aldama on the clock today, but the lived version is that Seoul is wrapping up the working day while Leon de los Aldama is still in the morning, and the overlap people actually use is narrow. That gap, more than the raw offset, is what teams have to design around.
In Leon de los Aldama, the working day picks up earliest in the financial districts — Leon de los Aldama's downtown core wakes early and breaks for lunch at the usual hour. The mood in Seoul is its own story: Seoul settles into the evening at the usual hour, with the local commuter pattern setting the pace. If you are scheduling between the two, the heatmap above marks the rows where both patterns line up.
Daylight saving is the other thing to keep an eye on. Mexico either observes DST or holds a fixed offset year-round; South Korea either follows its region's DST pattern or stays put all year. When the two changes are weeks apart, the offset between Leon de los Aldama and Seoul is one hour off the usual for that stretch — a cliff that catches recurring calendar invites unless your calendar app rebases them automatically. Pin the meeting to a city, not an offset, and the tool handles the rest.
For travellers, the 14h 49m flight is the short version of the story. The longer one is jet lag: roughly one day of adjustment per timezone crossed, which means a trip across the 15-hour gap costs about 15 groggy days on each side. Pilots and cabin crew swear by morning sunlight and an early walk; whatever your routine, the wall-clock numbers above are the source of truth for your first morning in the new city.