lib/egn/validator.rb in egn-1.3.3 vs lib/egn/validator.rb in egn-1.3.4

@@ -15,9 +15,13 @@
 
     # Checks if a given EGN is valid
     def validate
       return false unless @egn.length == 10
       return false unless Date.valid_date?(@year, @month, @day)
+      
+      # Gregorian calendar adoption in 1916 in Bulgaria
+      # 31/03/1916 > +13 days > 14/04/1916
+      return false if @year == 1916 && @month == 4 && @day <= 13
 
       # Calculate the checksum and check if the given one is correct
       checksum = Util.egn_checksum(@egn[0, 9])
       checksum == @egn[9].to_i
     end