Fix choppy sky animation

--HG--
branch : develop

code/ryzom/client/src/main_loop_debug.cpp

@@ -371,6 +371,9 @@ void displayDebug()
 	// Current GameCycle
 	TextContext->printfAt(1.f, line, "Ms per Cycle : %d", NetMngr.getMsPerTick());
 	line += lineStep;
+	// Smoothed Client Date
+	TextContext->printfAt(1.f, line, "Smoothed Client Date : %u %f", SmoothedClientDate.Day, SmoothedClientDate.Hour);
+	line += lineStep;
 	// Packet Loss
 	TextContext->printfAt(1.f, line, "Packet Loss : %.1f %%", NetMngr.getMeanPacketLoss()*100.0f);
 	line += lineStep;

code/ryzom/client/src/sky.cpp

@@ -235,7 +235,7 @@ uint CSky::setup(const CClientDate &date, const CClientDate &animationDate, floa
 	// animate objects
 	if (_PlayListManager)
 	{
-		double globalDate = ((double) _NumHourInDay * date.Day + (double) date.Hour) / _NumHourInDay;
+		double globalDate = (double)date.Hour / (double)_NumHourInDay;
 		//nlinfo("global date = %f", (float) globalDate);
 		_PlayListManager->animate(_AnimLengthInSeconds * globalDate);
 	}