Holidays
Count trading bars, not calendar days
The count compares trading bars. A day with no bar is not a close, and it is not an automatic reset. This note does not use one named holiday year.
What the series does
On the 9 page, series A is a run of trading bars, not calendar dates. If a holiday inserts no bar, the next trading bar still compares its close with the close four trading bars earlier. The holiday does not become bar 4-back.
Three gaps that look alike
- Scheduled exchange holiday: no bar. The count does not increase, and it does not reset only because the calendar skipped a day.
- Suspension: may also produce no bar. An empty cell does not prove the gap was a scheduled holiday.
- Vendor gap: a missing bar looks like a holiday inside the series. Check the exchange calendar before treating it as verified.
The next trading bar can still fail the four-bars-back test and remove 1–8. That failure is the close, not the holiday itself. A China A-share holiday does not stop US listings. Read each market on its own session date.
- Series A, the trading-bar example
- Clocks and what this count does not claim
- Hong Kong and US session dates
A count, not an order. Questions: support@nineradar.com.