Korea Time · KST · UTC+9
Claude Code Peak Hours in Korea Time (KST)
When Claude Code is busiest in Korea Time (Seoul, Busan, Incheon), and when to work so your limits go further. The heatmap below is already converted to KST (UTC+9) and updates live.
Claude Code heatmap in Korea Time
Messages you send to Claude — the closest measure of load.
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Top countries · 10 countries
- 🇹🇷 Türkiye631
- 🇸🇬 Singapore439
- 🇳🇱 Netherlands158
- 🇷🇺 Russia49
- 🇵🇱 Poland16
- 🇱🇹 Lithuania10
- 🇪🇪 Estonia8
- 🇵🇹 Portugal8
- 🇮🇪 Ireland4
- 🇭🇰 Hong Kong SAR China1
No country data yet — the map fills in as new check-ins arrive.
Activity by country · All time
Country is detected by the network from the connection; the IP address itself is not stored.
Peak and quiet hours in Korea Time
- Weekday peak5 AM–8 AM
- Quietest hours11 AM–2 PM
- Busiest dayThursday
- Quietest daySaturday
- Weekend share8%
Based on community data (1,324 messages), 3-hour windows, in Korea Time.
Incidents per Anthropic’s status page
- Most incidents10 PM–1 AM
- Fewest incidents11 AM–2 PM
- Most incident-prone dayFriday
171 incident hours with an open incident for Claude, the API or Claude Code, in Korea Time. Source: status.claude.com, synced hourly.
Anthropic’s stated peak window
9 PM–3 AM (past midnight)
Weekdays, 5–11 AM Pacific, shown in Korea Time. In March 2026 Anthropic said 5-hour limits drain faster during these hours; on May 6, 2026 that reduction was removed for Claude Code on Pro and Max, but it remains the busiest part of the day.
Planning your day
The global weekday peak is 9 PM–3 AM in Korea Time. In Korea Time that window falls outside your usual working hours. It is when North American mornings overlap with the European afternoon, so slow responses and overloaded errors are most likely then.
- Long agent runs (refactors, migrations, test generation): start them before 9 PM or after 3 AM.
- During the peak, favour short loops — reviews, small edits, questions about code — where a little latency hurts less.
- Weekends are noticeably calmer than weekdays in every time zone.
- If Claude is slow anyway, check the current load and the official status page.
Times account for the current daylight-saving state and are recalculated every time the site rebuilds.
Other time zones
- Pacific TimeUTC−7
- Central TimeUTC−5
- Eastern TimeUTC−4
- Brasília TimeUTC−3
- British TimeUTC+1
- Central European TimeUTC+2
- Eastern European TimeUTC+3
- Moscow TimeUTC+3
- Gulf TimeUTC+4
- Yekaterinburg TimeUTC+5
- Kazakhstan TimeUTC+5
- India TimeUTC+5:30
- Novosibirsk TimeUTC+7
- Singapore TimeUTC+8
- China TimeUTC+8
- Japan TimeUTC+9
- Australian Eastern TimeUTC+11