diff --git a/test.py b/test.py
index 4935d82..2c1541b 100644
--- a/test.py
+++ b/test.py
@@ -1,3 +1,3 @@
 from timefhuman import timefhuman
-print(timefhuman('october 27th'))
+print(timefhuman('March 30th'))
 
diff --git a/timefhuman/categorize.py b/timefhuman/categorize.py
index e63349e..ae9f8e7 100644
--- a/timefhuman/categorize.py
+++ b/timefhuman/categorize.py
@@ -111,12 +111,19 @@ def convert_relative_days_ranges(tokens, now=datetime.datetime.now()):
     # TODO: add support for 'next weekday' (not daterange, conditioinal lookahead)
     (saturday,) = convert_day_of_week(['upcoming', 'Saturday'], now)
     (monday,) = convert_day_of_week(['upcoming', 'Monday'], now)
+    month_= (now.replace(day=28)+datetime.timedelta(days=4)).replace(day=1)
+    month_end_= (((now.replace(day=28)+datetime.timedelta(days=4)).replace(day=28)+datetime.timedelta(days=4)).replace(day=1)-datetime.timedelta(days=1))
+    month=DayToken(month_.month,month_.day,month_.year)
+    month_end=DayToken(month_end_.month,month_end_.day,month_end_.year)
+    
     for keywords, replacement in (
             (("today",), DayToken.from_datetime(now)),
             (("tomorrow", "tmw"), DayToken.from_datetime(now + datetime.timedelta(1))),
             (("yesterday",), DayToken.from_datetime(now - datetime.timedelta(1))),
             (("weekend",), DayRange(saturday, saturday + 1)),
-            (("weekdays",), DayRange(monday, monday + 4))):
+            (("weekdays",), DayRange(monday, monday + 4)),
+            (("week",), DayRange(monday, monday + 6)),
+            (("month",), DayRange(month, month_end))):
         for keyword in keywords:
             tokens = [replacement if token == keyword else token \
                         for token in tokens]
diff --git a/timefhuman/data.py b/timefhuman/data.py
index 065cfd7..7e8749c 100644
--- a/timefhuman/data.py
+++ b/timefhuman/data.py
@@ -1,5 +1,6 @@
 import datetime
 
+monthlengths={1:31,2:28,3:31,4:30,5:31,6:30,7:31,8:31,9:30,10:31,11:30,12:31}
 
 class Token:
 
@@ -178,7 +179,13 @@ def __add__(self, other):
         3/5
         """
         assert isinstance(other, int)
-        return DayToken(self.month, self.day + other, self.year)
+        if self.day+other<=monthlengths[self.month]:
+            return DayToken(self.month, self.day + other, self.year)
+        elif self.month!=12:
+            return DayToken(self.month + 1, self.day + other - monthlengths[self.month], self.year)
+        else:
+            return DayToken(1, self.day + other - monthlengths[self.month], self.year+1)
+            
 
     def __radd__(self, other):
         """
diff --git a/timefhuman/main.py b/timefhuman/main.py
index 7733f5d..5689258 100644
--- a/timefhuman/main.py
+++ b/timefhuman/main.py
@@ -56,6 +56,7 @@ def timefhuman(string, now=None, raw=None):
         now = datetime.datetime.now()
 
     tokens = timefhuman_tokens(string, now)
+    #print(isinstance(tokens[1], Token))
 
     if raw:
         return tokens
@@ -75,3 +76,5 @@ def timefhuman_tokens(string, now):
     tokens = categorize(tokens, now)
     tokens = build_tree(tokens, now)
     return tokens
+if __name__ == '__main__':
+    print(timefhuman('next month'))
\ No newline at end of file