Update the earnings calendar

PIPELINE.md

@@ -174,6 +174,11 @@ instant is used for those — 23.1% of rows — and every other event is dated t
 early, which is the direction a knowledge date may be wrong in.
 `knowledge_estimated` marks which is which.
 
+The same convention decided a smaller thing: `announcements` and `earnings`
+carry `knowledge_date` as well, as an alias of the acceptance instant they
+already published under `announced_at`. Verified against the adapter itself --
+before the alias it resolved two configs of four, now it resolves all four.
+
 One consequence is visible in the data and is not an error: 63 065 events carry
 an exact timestamp earlier than their own filing date, because EDGAR stamps
 anything accepted after 17:30 with the next business day. The quality gate

README.md

@@ -217,6 +217,12 @@ date: EDGAR stamps anything accepted after 17:30 with the next business day.)
 | `events` | 4 382 182 | one 8-K item: a dated corporate event of any kind |
 | `pit` | 258 482 | one point-in-time earnings knowledge event, plus a Delta table |
 
+**All four configs carry `knowledge_date`**, so all four mount, not only
+`pit`: in `announcements` and `earnings` it is the acceptance instant itself,
+in `events` it is exact where a header was read and the end of the filing day
+otherwise. A config whose knowledge column is named anything else is refused by
+ziplime rather than indexed on an event date.
+
 `entity_id` in `pit` is the issuer CIK, the same key as every sibling dataset,
 so an earnings date joins directly to
 [company-fundamentals](https://huggingface.co/datasets/ZipLime/company-fundamentals),

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@@ -1,4 +1,4 @@
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manifest.json

@@ -33,6 +33,7 @@
       "form": "String",
       "inserted_at": "Datetime(time_unit='us', time_zone='UTC')",
       "items": "String",
+      "knowledge_date": "Datetime(time_unit='us', time_zone='UTC')",
       "period_of_report": "Date",
       "primary_document": "String",
       "session": "String",
@@ -57,6 +58,7 @@
       "fiscal_year": "Int32",
       "form": "String",
       "inserted_at": "Datetime(time_unit='us', time_zone='UTC')",
+      "knowledge_date": "Datetime(time_unit='us', time_zone='UTC')",
       "net_income": "Float64",
       "period_end": "Date",
       "quarters": "Int32",
@@ -144,7 +146,7 @@
   "event_date": "event_date",
   "event_date_type": "date",
   "frequency_seconds": null,
-  "generated_at": "2026-09-08T07:01:01.799920+00:00",
+  "generated_at": "2026-09-08T08:35:30.733063+00:00",
   "knowledge_date": "knowledge_date",
   "knowledge_date_policy": {
     "never_before_event_date": true,
@@ -170,7 +172,7 @@
     "origin": "SEC EDGAR bulk submissions and filing headers; figures from ZipLime/company-fundamentals",
     "package_version": "1.0.0",
     "recipe": "recipe/",
-    "recipe_hash": "sha256:a9c76329ea70004a8b3f0b4c57a9e5d7d1a4f6f220aaaa0fcb300ba5b735a566",
+    "recipe_hash": "sha256:a3eff0036d141fbceecb193332cd7e5433c90600568618791f014cce34d0ccd1",
     "schedule": "10 9 * * 1",
     "siblings": {
       "calendar": "XNYS via exchange_calendars",

recipe/build.py

@@ -66,6 +66,7 @@ def build_announcements(
             pl.col("reportDate").str.strptime(pl.Date, "%Y-%m-%d", strict=False)
             .alias("period_of_report"),
             pl.col("accepted_at").alias("announced_at"),
+            pl.col("accepted_at").alias("knowledge_date"),
             pl.when(pl.col("accepted_at").is_not_null())
             .then(pl.lit("filing_header"))
             .otherwise(pl.lit("unavailable"))

recipe/earnings.py

@@ -172,7 +172,8 @@ def build_earnings(
     candidates = (
         announcements.select(
             "cik", "accession_number", "form", "ticker", "ticker_confidence",
-            "announced_at", "announced_date_et", "session", "first_tradeable_session",
+            "announced_at", "knowledge_date", "announced_date_et", "session",
+            "first_tradeable_session",
         )
         .join(periodic, on="cik", how="inner")
         .filter(

recipe/schema.py

@@ -33,6 +33,11 @@ ANNOUNCEMENT_SCHEMA: dict[str, pl.DataType] = {
     "filed_date": pl.Date,
     "period_of_report": pl.Date,
     "announced_at": UTC_DATETIME,
+    # The same instant under the name ziplime indexes on. Its adapter refuses a
+    # config whose knowledge column is not one of the conventional names rather
+    # than fall back to an event date, so without this alias the table is
+    # unmountable however correct `announced_at` is.
+    "knowledge_date": UTC_DATETIME,
     "announced_date_et": pl.Date,
     "announced_time_et": pl.Time,
     "session": pl.String,
@@ -58,6 +63,7 @@ EARNINGS_SCHEMA: dict[str, pl.DataType] = {
     "ticker": pl.String,
     "ticker_confidence": pl.String,
     "announced_at": UTC_DATETIME,
+    "knowledge_date": UTC_DATETIME,
     "announced_date_et": pl.Date,
     "session": pl.String,
     "first_tradeable_session": pl.Date,

tests/test_docs_and_jobs.py

@@ -108,3 +108,18 @@ def test_a_truncated_archive_is_rejected(tmp_path, monkeypatch):
     archive.write_bytes(archive.read_bytes()[:-64])  # lose the central directory
     with pytest.raises(RuntimeError, match=r"not a readable zip archive"):
         bulk.check_archive(archive)
+
+
+def test_every_config_can_be_mounted_by_ziplime():
+    """ziplime indexes on a knowledge date and refuses a config that has none.
+
+    The names come from its adapter's preference list; a table whose knowledge
+    column is called something else is unusable as published, however correct
+    the column is. `events` was in exactly that position when first published.
+    """
+    conventional = {
+        "feature_available_at", "knowledge_date", "knowledge_day",
+        "available_at", "disclosure_date", "notification_date", "date",
+    }
+    for name, schema in CONFIG_SCHEMAS.items():
+        assert conventional & set(schema), f"{name} has no knowledge-date column"