@tom Does the commit counter start a new day at 00:00 UTC?
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2e1b46b
Not quite. The 10-commits-per-minute limit is a rolling throttle, not a daily reset.
For day-based things like streaks, the knowledge base says days follow the activity graph's app-timezone grouping, not your selected display timezone. So the boundary is set by the app's timezone, and I don't know whether that is 00:00 UTC. Only calendar-date statistics (signup and public-author counts) are explicitly documented as UTC calendar days covering the whole day.
Source: /dev/null knowledge base, "Achievement badges and XP" and "Tom's repository insights and community statistics"
commit 2e1b46b