diff --git a/backend/_tz_sample.py b/backend/_tz_sample.py
new file mode 100644
index 0000000..908c39e
--- /dev/null
+++ b/backend/_tz_sample.py
@@ -0,0 +1,36 @@
+"""One-shot: print live timestamp samples. Delete after use."""
+import asyncio
+
+from sqlalchemy import text
+from db_setup import get_sessionmaker
+
+
+async def main():
+    async with get_sessionmaker()() as s:
+        r = await s.execute(
+            text(
+                "SELECT message_received_time, created_at "
+                "FROM inbox_messages "
+                "WHERE message_received_time IS NOT NULL "
+                "AND btrim(message_received_time) <> '' "
+                "ORDER BY created_at DESC LIMIT 5"
+            )
+        )
+        print("=== EMAIL received | created_at ===")
+        for row in r:
+            print(repr(row[0]), "|", row[1])
+        r = await s.execute(
+            text(
+                "SELECT entry_date, entry_time, created_at, "
+                "raw_record->>'Timestamp' AS sheet_ts "
+                "FROM form_data WHERE entry_date IS NOT NULL "
+                "ORDER BY created_at DESC LIMIT 5"
+            )
+        )
+        print("=== FORM entry_date | entry_time | created_at | Timestamp ===")
+        for row in r:
+            print(row[0], "|", repr(row[1]), "|", row[2], "|", repr(row[3]))
+
+
+if __name__ == "__main__":
+    asyncio.run(main())