diff --git a/agenda/__init__.py b/agenda/__init__.py
index 74770dd..98f8a38 100644
--- a/agenda/__init__.py
+++ b/agenda/__init__.py
@@ -49,9 +49,9 @@ access_key = config.get("exchangerate", "access_key")
 data_dir = config.get("data", "dir")
 
 
-def next_uk_mothers_day() -> date:
+def next_uk_mothers_day(input_date: date) -> date:
     """Calculate the date of the next UK Mother's Day from the current date."""
-    current_year = date.today().year
+    current_year = input_date.year
 
     easter_date = easter(current_year)
 
@@ -59,23 +59,19 @@ def next_uk_mothers_day() -> date:
     mothers_day = easter_date + timedelta(weeks=3)
 
     # Check if Mother's Day has already passed this year
-    today = date.today()
-    if today > mothers_day:
+    if input_date > mothers_day:
         # If it has passed, calculate for the next year
-        current_year += 1
-        easter_date = easter(current_year)
+        easter_date = easter(current_year + 1)
         mothers_day = easter_date + timedelta(weeks=3)
 
     return mothers_day
 
 
-def next_uk_fathers_day() -> date:
+def next_uk_fathers_day(input_date: date) -> date:
     """Calculate the date of the next UK Father's Day from the current date."""
     # Get the current date
-    today = date.today()
-
     # Calculate the day of the week for the current date (0 = Monday, 6 = Sunday)
-    current_day_of_week = today.weekday()
+    current_day_of_week = input_date.weekday()
 
     # Calculate the number of days until the next Sunday
     days_until_sunday = (6 - current_day_of_week) % 7
@@ -238,8 +234,8 @@ def get_data() -> dict[str, str | object]:
         "stock_markets": stock_markets(),
         "uk_clock_change": get_next_timezone_transition("Europe/London"),
         "us_clock_change": get_next_timezone_transition("America/New_York"),
-        "mothers_day": next_uk_mothers_day(),
-        "fathers_day": next_uk_fathers_day(),
+        "mothers_day": next_uk_mothers_day(today),
+        "fathers_day": next_uk_fathers_day(today),
     }
 
     return reply