Buying Opportunity Or A Change In Trend?

If we look at the 20 day 4 hr chart of the S&P500,the first chart below, we see that the fast band of moving averages has moved below the slow band and this is an alert to a buying opportunity and a warning sign of a reversal. However, a true reversal will not occur unless the fast band moves below the slow band on the daily chart, comes back to the slow band, and bounces down from there. See second chart for 3 month daily chart. The 4 hr (or half day) chart is just for keeping us alert to what goes on with the daily chart. So, while we have an alert to a possible trend change, it has not happened yet. This could be a buying opportunity if we hold support here. That would make this a buying on a dip type of opportunity. We will just have to wait and see. Click chart to enlarge.
The 3 month daily chart