Model localtime as parameter to update function

preload/main.py

@@ -159,7 +159,8 @@ class Clock:
         try:
             with display.open() as disp:
                 while True:
-                    self.updateClock(disp)
+                    localtime = utime.localtime()
+                    self.updateClock(disp, localtime)
                     if self.run_once:
                         break
 
@@ -181,9 +182,8 @@ class Clock:
                 leds.set(i, (0, 0, 0))
             return
 
-    def updateClock(self, disp):
+    def updateClock(self, disp, localtime):
         disp.clear(self.background_col)
-        localtime = utime.localtime()
 
         disp.pixel(self.center[0] + self.offsetx, self.center[1], col=self.center_col)
         hour_coords = self.circlePoint(