diff --git a/CHANGES.md b/CHANGES.md
index 0463652b..e5c1db82 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -13,6 +13,7 @@
 * Update Beautiful Soup 4.4.0 (r397) to 4.5.3 (r439)
 * Update cachecontrol library 0.11.5 to 0.12.3 (db54c40)
 * Update Certifi 2015.11.20.1 (385476b) to 2017.01.23 (9f9dc30)
+* Update dateutil library 2.4.2 (d4baf97) to 2.6.1 (2f3a160)
 * Update feedparser library 5.2.0 (8c62940) to 5.2.1 (f1dd1bb)
 * Update html5lib 0.99999999/1.0b9 (46dae3d) to (1a28d72)
 * Update IMDb 5.1dev20160106 to 5.1 (r907)
@@ -79,6 +80,7 @@
 * Change improve newnab autoselect categories
 * Change add nzb.org BoxSD and BoxHD categories
 * Change post processor, ignore symlinks found in process_dir
+* Change file modify date of episodes older than 1970 can be changed to airdate, log warning on set fail
 
 
 [develop changelog]
diff --git a/sickbeard/helpers.py b/sickbeard/helpers.py
index 699a2eeb..cabf5cb7 100644
--- a/sickbeard/helpers.py
+++ b/sickbeard/helpers.py
@@ -1017,15 +1017,14 @@ def set_up_anidb_connection():
     return sickbeard.ADBA_CONNECTION.authed()
 
 
-def touchFile(fname, atime=None):
-    if None != atime:
+def touch_file(fname, atime=None):
+    if None is not atime:
         try:
             with open(fname, 'a'):
                 ek.ek(os.utime, fname, (atime, atime))
-                return True
-        except:
-            logger.log(u"File air date stamping not available on your OS", logger.DEBUG)
-            pass
+            return True
+        except (StandardError, Exception):
+            logger.log('File air date stamping not available on your OS', logger.DEBUG)
 
     return False
 
@@ -1581,3 +1580,13 @@ def is_link(filepath):
         return invalid_file_attributes != attr and 0 != attr & file_attribute_reparse_point
 
     return ek.ek(os.path.islink, filepath)
+
+
+def datetime_to_epoch(dt):
+    """ convert a datetime to seconds after (or possibly before) 1970-1-1 """
+    """ can raise an error with dates pre 1970-1-1 """
+    if not isinstance(getattr(dt, 'tzinfo'), datetime.tzinfo):
+        from sickbeard.network_timezones import sb_timezone
+        dt = dt.replace(tzinfo=sb_timezone)
+    utc_naive = dt.replace(tzinfo=None) - dt.utcoffset()
+    return int((utc_naive - datetime.datetime(1970, 1, 1)).total_seconds())
diff --git a/sickbeard/tv.py b/sickbeard/tv.py
index a3e2d479..07653b6f 100644
--- a/sickbeard/tv.py
+++ b/sickbeard/tv.py
@@ -2623,13 +2623,7 @@ class TVEpisode(object):
                        % (self.show.indexerid, ek.ek(os.path.basename, self.location)), logger.DEBUG)
             return
 
-        hr = m = 0
-        airs = re.search('.*?(\d{1,2})(?::\s*?(\d{2}))?\s*(pm)?', self.show.airs, re.I)
-        if airs:
-            hr = int(airs.group(1))
-            hr = (12 + hr, hr)[None is airs.group(3)]
-            hr = (hr, hr - 12)[0 == hr % 12 and 0 != hr]
-            m = int((airs.group(2), m)[None is airs.group(2)])
+        hr, m = network_timezones.parse_time(self.show.airs)
         airtime = datetime.time(hr, m)
 
         airdatetime = datetime.datetime.combine(self.airdate, airtime)
@@ -2637,12 +2631,15 @@ class TVEpisode(object):
         filemtime = datetime.datetime.fromtimestamp(ek.ek(os.path.getmtime, self.location))
 
         if filemtime != airdatetime:
-            import time
 
-            airdatetime = airdatetime.timetuple()
-            if helpers.touchFile(self.location, time.mktime(airdatetime)):
+            if helpers.touch_file(self.location, helpers.datetime_to_epoch(airdatetime)):
                 logger.log('%s: Changed modify date of %s to show air date %s'
-                           % (self.show.indexerid, ek.ek(os.path.basename, self.location), time.strftime('%b %d,%Y (%H:%M)', airdatetime)))
+                           % (self.show.indexerid, ek.ek(os.path.basename, self.location),
+                              airdatetime.strftime('%b %d,%Y (%H:%M)')))
+            else:
+                logger.log('%s: Error changing modify date of %s to show air date %s, Error: %s'
+                           % (self.show.indexerid, ek.ek(os.path.basename, self.location),
+                              airdatetime.strftime('%b %d,%Y (%H:%M)'), e.message), logger.WARNING)
 
     def __getstate__(self):
         d = dict(self.__dict__)