Record exposure stop and last exposure
Synthetic new exposure stops 10:00. Last recorded exposure is 09:55; local matching window runs 60 minutes after each exposure, through its endpoint inclusive. Review 10:05. No new exposure is allowed from 10:00, but the last unit may still produce an eligible observed event through 10:55. This is a supplied measurement policy, not causal evidence.
| Boundary | Time | At 10:05 |
|---|---|---|
| New exposure stop | 10:00 | Stopped |
| Last observation end | 10:55 | Still open |
Calculate the remaining observation tail
- Retain stop record 10:00
- Find last exposure 09:55
- Add 60-minute local window
- Keep observation open until 10:55
Do not add new exposure merely because conversion observation remains open.
How many observation minutes remain at 10:05?
Show the worked answer
Fifty minutes, to 10:55. New exposure is stopped, but the supplied event window is not mature at 10:05.
Keep the result state provisional
| Case | Decision or result | Reason |
|---|---|---|
| Mark all results final at 10:00 | Too early | Last window ends 10:55 |
| Keep observation open, exposure stopped | Accurate phase state | Different boundaries |
The report records the observation cutoff and remaining late-event handling. It does not declare a winner or measured performance from this clock calculation.