diff --git a/timecore.lua b/timecore.lua
index 5027667..9b2e3c7 100644
--- a/timecore.lua
+++ b/timecore.lua
@@ -17,30 +17,31 @@
 --}
 
 -- @fn isSummerTime(year, month, day, hour, minute, second,dow)
--- @param year      Current year of day       range (2016 - ...)
--- @param month     Current month of year     range (1 - 12) e.g. 2 is Februrary
--- @param day       Current day in month      range (1 - 31)
--- @param hour      Current hour of day       range (0 - 23)
--- @param minute    Current minute in hour    range (0 - 59)
--- @param second    Current second of minute  range (0 - 59)
--- @param dow       Current day of week       range (1 - 7)   (1 is Monday, 7 is Sunday)
+-- The @param time is a struct containing the following entries:
+-- @var year      Current year of day       range (2016 - ...)
+-- @var month     Current month of year     range (1 - 12) e.g. 2 is Februrary
+-- @var day       Current day in month      range (1 - 31)
+-- @var hour      Current hour of day       range (0 - 23)
+-- @var minute    Current minute in hour    range (0 - 59)
+-- @var second    Current second of minute  range (0 - 59)
+-- @var dow       Current day of week       range (1 - 7)   (1 is Monday, 7 is Sunday)
 -- @return <code>true</code> if we have currently summer time
 -- @return <code>false</code> if we have winter time
-function isSummerTime(year, month, day, hour, minute, second,dow)
+function isSummerTime(time)
   -- we are in 100% in the summer time
-  if (month > 3 and month < 10) then 
+  if (time.month > 3 and time.month < 10) then 
     return true
   -- March is not 100% Summer time, only starting at the last sunday
-  elseif ((month == 3 and day >= 25 and day <= 31 and hour > 2 and dow == 7) or
+  elseif ((time.month == 3 and time.day >= 25 and time.day <= 31 and time.hour > 2 and time.dow == 7) or
           -- Only handle days after the last sunday in this month
-          ((month == 3 and day >= 25 and day <= 31 and dow < 7 and ((7-dow + day) > 31))) ) then
+          ((time.month == 3 and time.day >= 25 and time.day <= 31 and time.dow < 7 and ((7-time.dow + time.day) > 31))) ) then
    -- summer time
    return true
   -- October is not 100% Summer time, ending with the last sunday
-  elseif ((month == 10 and day >= 25 and day <= 31 and (hour < 2 or (hour == 2 and minute== 0 and second == 0)) and dow == 7) or
-          (month == 10 and day >= 25 and day <= 31 and dow < 7 and ((7-dow + day) <= 31)) or 
+  elseif ((time.month == 10 and time.day >= 25 and time.day <= 31 and (time.hour < 2 or (time.hour == 2 and time.minute== 0 and time.second == 0)) and time.dow == 7) or
+          (time.month == 10 and time.day >= 25 and time.day <= 31 and time.dow < 7 and ((7-time.dow + time.day) <= 31)) or 
            -- Handle all days up to the 25. of october
-           (month == 10 and day < 25 )
+           (time.month == 10 and time.day < 25 )
            )then
    -- summer time
    return true
diff --git a/unit/testTimes.lua b/unit/testTimes.lua
index 89dd9b5..4e72c4b 100644
--- a/unit/testTimes.lua
+++ b/unit/testTimes.lua
@@ -9,7 +9,17 @@ WINTERTIME_OFFSET=1
 -- so resultingHourDiff is 1 in wintertime
 -- and 2 in summertime
 function checkTime(yearIn, monthIn, dayIn, hourIn, minutesIn, secondsIn,dowIn, resultingHourDiff)
-    local summerTime = isSummerTime(yearIn, monthIn, dayIn, hourIn, minutesIn, secondsIn, dowIn)
+    -- Generate a time struct from the given parameter
+    time = {}
+    time.year = yearIn
+    time.month = monthIn
+    time.day = dayIn
+    time.hour = hourIn
+    time.minute = minutesIn
+    time.second = secondsIn
+    time.dow = dowIn
+    -- the test itself
+    local summerTime = isSummerTime(time)
     if ((resultingHourDiff == SUMMERTIME_OFFSET and not (summerTime == true)) or (resultingHourDiff == WINTERTIME_OFFSET and not (summerTime == false))) then
         print(yearIn .. "-" .. string.format("%0.2d", monthIn) .. "-" .. string.format("%0.2d", dayIn) .. " " .. string.format("%0.2d", hourIn) .. ":" .. string.format("%0.2d", minutesIn) .. ":" .. string.format("%0.2d", secondsIn) .. " (dow:" .. dowIn .. ") was not GMT+" .. resultingHourDiff .. "  ( summer time was " .. tostring(summerTime) .. ")" )
         os.exit(1)
diff --git a/unit/testTimesMarchOctober.lua b/unit/testTimesMarchOctober.lua
index 7c3caf5..474e9ae 100755
--- a/unit/testTimesMarchOctober.lua
+++ b/unit/testTimesMarchOctober.lua
@@ -9,7 +9,17 @@ WINTERTIME_OFFSET=1
 -- so resultingHourDiff is 1 in wintertime
 -- and 2 in summertime
 function checkTime(yearIn, monthIn, dayIn, hourIn, minutesIn, secondsIn,dowIn, resultingHourDiff)
-    local summerTime = isSummerTime(yearIn, monthIn, dayIn, hourIn, minutesIn, secondsIn, dowIn)
+    -- Generate a time struct from the given parameter
+    time = {}
+    time.year = yearIn
+    time.month = monthIn
+    time.day = dayIn
+    time.hour = hourIn
+    time.minute = minutesIn
+    time.second = secondsIn
+    time.dow = dowIn
+    -- the test itself
+    local summerTime = isSummerTime(time)
     if ((resultingHourDiff == SUMMERTIME_OFFSET and not (summerTime == true)) or (resultingHourDiff == WINTERTIME_OFFSET and not (summerTime == false))) then
         print(yearIn .. "-" .. string.format("%0.2d", monthIn) .. "-" .. string.format("%0.2d", dayIn) .. " " .. string.format("%0.2d", hourIn) .. ":" .. string.format("%0.2d", minutesIn) .. ":" .. string.format("%0.2d", secondsIn) .. " (dow:" .. dowIn .. ") was not GMT+" .. resultingHourDiff .. "  ( summer time was " .. tostring(summerTime) .. ")" )
         os.exit(1)
@@ -17,6 +27,7 @@ function checkTime(yearIn, monthIn, dayIn, hourIn, minutesIn, secondsIn,dowIn, r
         print(yearIn .. "-" .. string.format("%0.2d", monthIn) .. "-" .. string.format("%0.2d", dayIn) .. " " .. string.format("%0.2d", hourIn) .. ":" .. string.format("%0.2d", minutesIn) .. ":" .. string.format("%0.2d", secondsIn) .. " summertime is " .. tostring(summerTime) .. " (GMT+" .. resultingHourDiff .. ")" )
     end
 end
+
 checkTime(2016, 3, 1, 0, 14, 34, 2, 1)
 checkTime(2016, 3, 1, 1, 53, 5, 2, 1)
 checkTime(2016, 3, 1, 2, 19, 51, 2, 1)
diff --git a/unit/timetest_head.template b/unit/timetest_head.template
index 72c76b8..b02e616 100644
--- a/unit/timetest_head.template
+++ b/unit/timetest_head.template
@@ -9,7 +9,17 @@ WINTERTIME_OFFSET=1
 -- so resultingHourDiff is 1 in wintertime
 -- and 2 in summertime
 function checkTime(yearIn, monthIn, dayIn, hourIn, minutesIn, secondsIn,dowIn, resultingHourDiff)
-    local summerTime = isSummerTime(yearIn, monthIn, dayIn, hourIn, minutesIn, secondsIn, dowIn)
+    -- Generate a time struct from the given parameter
+    time = {}
+    time.year = yearIn
+    time.month = monthIn
+    time.day = dayIn
+    time.hour = hourIn
+    time.minute = minutesIn
+    time.second = secondsIn
+    time.dow = dowIn
+    -- the test itself
+    local summerTime = isSummerTime(time)
     if ((resultingHourDiff == SUMMERTIME_OFFSET and not (summerTime == true)) or (resultingHourDiff == WINTERTIME_OFFSET and not (summerTime == false))) then
         print(yearIn .. "-" .. string.format("%0.2d", monthIn) .. "-" .. string.format("%0.2d", dayIn) .. " " .. string.format("%0.2d", hourIn) .. ":" .. string.format("%0.2d", minutesIn) .. ":" .. string.format("%0.2d", secondsIn) .. " (dow:" .. dowIn .. ") was not GMT+" .. resultingHourDiff .. "  ( summer time was " .. tostring(summerTime) .. ")" )
         os.exit(1)
@@ -17,3 +27,4 @@ function checkTime(yearIn, monthIn, dayIn, hourIn, minutesIn, secondsIn,dowIn, r
         print(yearIn .. "-" .. string.format("%0.2d", monthIn) .. "-" .. string.format("%0.2d", dayIn) .. " " .. string.format("%0.2d", hourIn) .. ":" .. string.format("%0.2d", minutesIn) .. ":" .. string.format("%0.2d", secondsIn) .. " summertime is " .. tostring(summerTime) .. " (GMT+" .. resultingHourDiff .. ")" )
     end
 end
+