diff --git a/labs02/task02.py b/labs02/task02.py
index a6d6321..0467e3e 100644
--- a/labs02/task02.py
+++ b/labs02/task02.py
@@ -6,7 +6,13 @@
 """
 
 def days_in_year(days):
-    pass
+    dni=0
+    if days % 4 == 0 and days % 100 != 0 or days % 400 == 0:
+            dni = 366
+    else:
+            dni = 365 
+
+    return dni
 
 def tests(f):
     inputs = [[2015], [2012], [1900], [2400], [1977]]