Shift work in a market that never sleeps
The crypto market is open around the clock, with no weekends or holidays. That doesn't mean the same people trade all day, though. People are mostly active during their own daytime, so as the earth turns, traders in Asia, Europe and the US enter and leave the market in turn. Each region uses different exchanges and follows different news, so the same coin can trade with a different feel depending on the hour. This guide lays out that structure in Korean time; it does not cover statistics on which hours tend to rise or fall.
A rough split in Korean time
There are no official boundaries between sessions. They are usually divided by the working hours of each region's main financial centers, and they overlap. Seen from Korea, the split is roughly as follows.
- Asian hours: from the Korean morning until around evening
- European hours: from late afternoon until around midnight in Korea
- US hours: from the Korean night until around the next morning
- US stock market regular session: opens at 10:30 p.m. Korean time during daylight saving, 11:30 p.m. otherwise
When daily and weekly candles roll over
Most global exchanges split their candles by UTC. Midnight UTC is 9 a.m. in Korea, so on these charts a new daily candle starts at 9 a.m. Korean time and the weekly candle changes at 9 a.m. on Monday. Korean exchanges, on the other hand, may start the day at midnight Korean time depending on the screen or chart setting, or calculate percentage change against the price 24 hours earlier. If the same coin's daily candle for the same day looks different on two screens, it isn't an error; the day is simply cut at a different time. When reading a chart, check the time zone setting first.
Things that happen at fixed times
A few events happen at set times each day. Trading can bunch up or prices can jump around these times, so when you see a spiky candle, recalling what was scheduled then can help find the cause. That does not mean the price moves the same way at those times every day.
- Perpetual futures funding settlement: every 8 hours on many exchanges, shorter for some coins
- Major US economic data releases: usually in the US Eastern morning, which is night in Korea
- The opening and close of the US stock market's regular session
- The closing times of daily, weekly and monthly candles
The one-hour shift from daylight saving
Korea has no daylight saving time, but the US and Europe do. The US usually runs it from the second Sunday of March to the first Sunday of November, and Europe from the last Sunday of March to the last Sunday of October, though the rules can change. During that time the US and European working day moves an hour earlier in Korean time. A UTC daily candle, however, rolls over at 9 a.m. Korean time regardless of season, so the gap between the US open and the daily candle boundary changes with the seasons. In March and October to November, the US and Europe switch on different dates, leaving a few weeks when the gap is unusual.
Be careful with time-of-day claims
Claims that prices often rise or fall during a particular session spread easily, but unless they say which coins, which period and how they counted, there is no way to check them. Changing the period often flips the result, and since the mix of market participants changes every year, there is no guarantee that a past tendency will continue. What the structure does explain is that in quiet hours the order book is thin, so small orders can move the price a lot. If you're curious, lining up the same hour's candles and volume across several days and looking for yourself beats borrowing someone else's conclusion.
- Did they say which coins and which period they counted?
- Does the result hold if the period changes?
- What time zone are the candles set to?
- Are weekends and holidays mixed in?
Check it with this site's live tools
The world clock shows the current time and time difference for major cities such as Seoul, New York, London and Tokyo on one screen, so you can see at once which regions are in daytime and whether daylight saving applies. The funding rate dashboard shows a countdown to the next settlement, which gives you a feel for when settlements fall in Korean time. The volume spike scanner compares 5-minute, 15-minute and 1-hour volume with the average of the previous 20 candles, so you can watch for yourself, day by day, how volume changes as the sessions hand over.
Summary and caution
The crypto market never closes, but participants hand over by region, and screens cut the day at different times. Understanding sessions helps you find the cause of a spiky candle or explain why daily figures look different, but it is not evidence that trading at a particular hour gives you an edge. This guide is not investment advice; check funding settlement intervals and data release schedules with the exchanges and the issuing agencies.
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