dst_shift
Answered against 22 years of US equities and 12 years of US options data and published with the query that produced it. This result is stored as of 2026-09-23, from us-stock-market-hours-beijing-time.
| month | month_label | beijing_minus_ny_hours | earliest_tape_start_bj | latest_tape_start_bj |
|---|---|---|---|---|
| 2025-08-01 | 2025年8月 | 12 | 16:00 | 16:00 |
| 2025-09-01 | 2025年9月 | 12 | 16:00 | 16:01 |
| 2025-10-01 | 2025年10月 | 12 | 16:00 | 16:00 |
| 2025-11-01 | 2025年11月 | 13 | 17:00 | 17:00 |
| 2025-12-01 | 2025年12月 | 13 | 17:00 | 17:00 |
| 2026-01-01 | 2026年1月 | 13 | 17:00 | 17:00 |
| 2026-02-01 | 2026年2月 | 13 | 17:00 | 17:00 |
| 2026-03-01 | 2026年3月 | 12.23 | 16:00 | 17:00 |
| 2026-04-01 | 2026年4月 | 12 | 16:00 | 16:00 |
| 2026-05-01 | 2026年5月 | 12 | 16:00 | 16:00 |
| 2026-06-01 | 2026年6月 | 12 | 16:00 | 16:00 |
| 2026-07-01 | 2026年7月 | 12 | 16:00 | 16:00 |
| 2026-08-01 | 2026年8月 | 12 | 16:00 | 16:00 |
| 2026-09-01 | 2026年9月 | 12 | 16:00 | 16:00 |
- Rows × columns
- 14 × 5
- Period covered
- to
- Computed
- Completeness
- No missing values
- Source
- US exchange, SIP and OPRA market data
- Licence
- Strasmore terms · free, no signup
What each column holds
| Column | Type | Range | Notes |
|---|---|---|---|
month |
date | 2025-08-01 to 2026-09-01 | |
month_label |
text | 14 distinct values (2025年10月, 2025年11月, 2025年12月…) | |
beijing_minus_ny_hours |
number | 12 to 13 | |
earliest_tape_start_bj |
text | 2 distinct values (16:00, 17:00) | |
latest_tape_start_bj |
text | 3 distinct values (16:00, 16:01, 17:00) |
Computed from Strasmore's warehouse of US exchange, SIP and OPRA market data. Equity prices are delayed; options greeks and implied volatility are end-of-day. This result is stored, not recomputed on load — it is exactly the numbers that were returned on , and the query below is what returned them.
Run it yourself
This is the exact query behind the result above. Change a ticker, a date or a column and run it against the warehouse — no account, no key. The no-signup tier is smaller than the one this page was computed on; a query that reaches past it comes back saying which plan runs it.
SELECT
toString(toStartOfMonth(session_date)) AS month,
concat(toString(toYear(session_date)), '年', toString(toMonth(session_date)), '月') AS month_label,
round(avg(offset_hours), 2) AS beijing_minus_ny_hours,
min(tape_start_bj) AS earliest_tape_start_bj,
max(tape_start_bj) AS latest_tape_start_bj
FROM
(
SELECT
toDate(toTimeZone(window_start, 'America/New_York')) AS session_date,
formatDateTime(toTimeZone(min(window_start), 'Asia/Shanghai'), '%H:%i') AS tape_start_bj,
(toHour(toTimeZone(min(window_start), 'Asia/Shanghai'))
- toHour(toTimeZone(min(window_start), 'America/New_York')) + 24) % 24 AS offset_hours
FROM global_markets.delayed_stocks_minute_aggs
WHERE ticker = 'SPY'
AND window_start >= today() - 400
AND window_start < today() - 2
GROUP BY session_date
)
GROUP BY month, month_label
ORDER BY month
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