16 JAN 2026
David debugged: Calendar agent creating Kerra events in wrong timezone
David identified that calendar agents were persisting events with the wrong timezone and commissioned a multi-pronged production investigation into the frontend rendering path and backend calendar creation logic.
Users were seeing Kerra-created calendar events appearing at the wrong times. David shared screenshots as evidence and directed the investigation:
go investigate what is going on with the calendar agent continually creating kerra events in the wrong timezone. dont make code changes yet. go investigate on production
The investigation split: one sub-agent was dispatched to trace the frontend rendering path (week/month grid vs. event detail sidebar), identifying components, hooks, and utilities responsible for event time formatting and timezone determination. The primary agent investigated backend calendar agent creation logic and the ECS/CloudWatch logs.
The root cause traced to recurring event clusters being written to the database in massive timestamp clusters (46 events in 147 milliseconds) because recurring events were being created without proper timezone-aware scheduling — a mix of the calendar agent's output timezone and the event persistence layer treating times as UTC.