diff --git a/adafruit_ntp.py b/adafruit_ntp.py
index 1a4a27a..6297ebf 100644
--- a/adafruit_ntp.py
+++ b/adafruit_ntp.py
@@ -25,18 +25,15 @@
 
 Network Time Protocol (NTP) helper for CircuitPython
 
-
-* Author(s): Brent Rubell
+ * Author(s): Brent Rubell
 
 Implementation Notes
 --------------------
-
 **Hardware:**
-
 **Software and Dependencies:**
 
-* Adafruit CircuitPython firmware for the supported boards:
-  https://github.com/adafruit/circuitpython/releases
+ * Adafruit CircuitPython firmware for the supported boards:
+   https://github.com/adafruit/circuitpython/releases
 
 """
 import time
@@ -65,11 +62,14 @@ def set_time(self, tz_offset=0):
         """Fetches and sets the microcontroller's current time
         in seconds since since Jan 1, 1970.
 
-        :param int tz_offset: Timezone offset from GMT
+        :param int tz_offset: The offset of the local timezone,
+            in seconds west of UTC (negative in most of Western Europe,
+            positive in the US, zero in the UK).
         """
+
         try:
             now = self._esp.get_time()
-            now = time.localtime(now[0] + (tz_offset * 3600))  # 3600 seconds in an hour
+            now = time.localtime(now[0] + tz_offset)
             rtc.RTC().datetime = now
             self.valid_time = True
         except ValueError as error: