[TomRedlake]

Why not replacing it like this (much better than doing loop):

Code:

CMD:day(playerid, params[])
{
	if(PlayerInfo[playerid][pAdmin] <= 2) return SendClientMessage(playerid, COLOR_RED, "ERROR: Insufficient Permissions!");
	SetWorldTime(12);
        SendClientMessageToAll(COLOR_RED, "Server's time has been set to day time!");
	return 1;
}

Check it more here:
SetWorldTime