Weekly MACD custom (6,13,close,31) did my Fibs from when Histogram turns red (not shown) only blue MACD line. Blue MACD line creates interesting levels of support when turns up from bottom. Comparison with 2014 - 2015 suggests this is a 4-5 week run counting from the Parabolic SAR dots below candlesticks. I'll add in Chart with full MACD pic. below
If you want to got further back with MACD 2014 - 2015 here it is
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Forgot to include this one of shorter version 2014 - 15 showing full MACD below with Histogram
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Charts above and comments. Don't forget NOT ADVICE DYOR