# India daily news calendar (2011-10-01 → 2026-10-06, IST)

Day-by-day calendar of **major India / India-markets news** for Nifty/Sensex opens and daily-return joins. One row per calendar day (including weekends/holidays).

**Join key = `date`** (YYYY-MM-DD, Asia/Kolkata). Quiet days = `(quiet)` / `impact=none` — that means **no verified major item was captured**, not that nothing happened.

## Files

| file | what |
|------|------|
| `india_daily_news.csv` / `.jsonl` | **Full 15y series** (5485 rows): 2011-10-01..2026-10-06 |
| `india_daily_news_15y.csv` / `.jsonl` | Same full series (explicit 15y artifact) |
| `india_daily_news_202410_202610.csv` / `.jsonl` | Snapshot of the prior short window (Oct 2024–Oct 2026) kept for reference |
| `events_calendar.csv` / `events_calendar_15y.csv` | Scheduled / known events (`certainty=scheduled`): RBI/policy, FOMC, US CPI, Budget, elections, NSE holidays, Muhurat, special sessions, SEBI structure |
| `build_calendar.py` | Regenerator. Historical seed: `_hist_events.json`, `_fomc_hist.txt`. Trading days prefer Nifty OHLC sessions |
| `build_calendar_202410_202610.py` | Frozen short-window builder (reference) |

## Daily columns

Same schema as before: `date`, `is_trading_day`, `headline`, `summary`, `categories`, `bias_tags`, `impact`, `sources`, `notes`.

### Timing conventions
- **US CPI**: 08:30 ET → after India close; next NSE session gets `us-cpi-overnight`.
- **FOMC**: 14:00 ET → IST mapping; next session gets `fomc-overnight` when needed.
- **RBI MPC / policy**: ~10:00 IST mid-session (open carries event premium). Pre-Oct 2016 rows are bi-monthly / off-cycle policy statements (MPC began Oct 2016).
- **`is_trading_day`**: derived primarily from Nifty 50 daily sessions (`^NSEI` OHLC). Weekday gaps = holidays / no session.

## Coverage and limits (honest)

**Scheduled (full span, regenerable):**
- RBI MPC / policy decision dates (pre-MPC policy + MPC era as published)
- Union Budget days (incl. interim / post-election full budgets)
- Lok Sabha result / exit-poll days that moved markets (2014, 2019, 2024)
- NSE holidays via Nifty session gaps (+ named holidays 2024-10+)
- US FOMC decision dates; US CPI release dates with India-open reaction tagging

**Verified HIGH-IMPACT one-offs (non-exhaustive):** demonetisation 2016-11-08/09, GST launch 2017-07-01, Budget LTCG 2018-02, IL&FS/NBFC 2018-09, corp tax cut 2019-09, Yes Bank 2020-03-05, COVID crash Mar 2020, Ukraine Feb 2022, plus the dense Oct 2024–Oct 2026 curated set.

**Gaps / thinner years:**
- One-off *headline* coverage is densest for Oct 2024–Oct 2026 and for well-known crisis episodes; many ordinary volatile days in 2011–2019/2021–2023 remain `(quiet)`.
- Some US CPI dates in 2011–2014 and mid/late 2021–2024 are schedule-derived from BLS/ALFRED/PFEI secondary lists (see notes flags `early-archive-approx` / `schedule-derived`) — treat as scheduled calendar, not always double-checked against the PDF timestamp.
- **Earnings** still optional / mostly absent.
- India CPI/IIP/GDP, daily FII/DII, and most SEBI circulars are not fully enumerated.
- Quiet ≠ nothing.

## How to refresh
1. Edit `_hist_events.json` and/or the recent lists inside `build_calendar.py`.
2. Refresh Nifty OHLC if needed (`nifty50_daily_ohlc_15y.csv`) so trading-day flags stay accurate.
3. Run `/workspace/opt-venv/bin/python build_calendar.py`.

Primary calendars: RBI (`AnnualPolicy.aspx`), Fed FOMC calendars / historical year pages, BLS CPI schedule/archive, NSE holiday circulars (recent), India Budget list (indiabudget / Wikipedia).

Bias framing only. Not trade advice.