Add Tobacco factory market days

Closes: #38

agenda/__init__.py

@@ -374,6 +374,36 @@ def windmill_hill_market_days(start_date: date) -> list[Event]:
     return events
 
 
+def tobacco_factory_market_days(start_date: date) -> list[Event]:
+    """Tobacco Factory Market days for the next 12 months from a given date."""
+    events: list[Event] = []
+    current_date = start_date
+    count = 0
+
+    tz = pytz.timezone("Europe/London")
+    t = time(10, 0)
+
+    while count < 52:  # 52 weeks in a year
+        # Calculate the next Sunday from the current date
+        next_sunday = current_date + relativedelta(weekday=6)  # Sunday is 6
+
+        # Include it in the list only if it's on or after the start_date
+        if next_sunday >= start_date:
+            events.append(
+                Event(
+                    name="market",
+                    title="Tobacco Factory Sunday Market",
+                    date=tz.localize(datetime.combine(next_sunday, t)),
+                )
+            )
+            count += 1
+
+        # Move to the next week
+        current_date += timedelta(weeks=1)
+
+    return events
+
+
 # Test the function
 if __name__ == "__main__":
     start_date = date(2023, 10, 29)
@@ -553,7 +583,7 @@ def get_data(now: datetime) -> typing.Mapping[str, str | object]:
         "xmas_last_posting_dates": xmas_last_posting_dates,
         "gwr_advance_tickets": find_gwr_advance_ticket_date(),
         "critical_mass": critical_mass(today),
-        "market": windmill_hill_market_days(today),
+        "market": windmill_hill_market_days(today) + tobacco_factory_market_days(today),
         "rockets": thespacedevs.get_launches(rocket_dir, limit=40),
     }