While looking at BTC-USD data on Yahoo Finance, I was puzzled by the following:
Date Open High Low Close* Adj Close** Volume Apr 06, 2017 1,129.87 1,201.55 1,130.51 1,188.70 1,188.70 108,182,158
Note that Open = 1,129.87 < 1,130.51 = Low. How is this possible?
I thought that
Low was the daily minimum and
High was the daily maximum. Isn't that the case?
I found other OHLC anomalies on other dates. April 6, 2017 is not the only anomalous date.
Yahoo Finance also has trouble with daylight savings time. It is assumed that the starting and ending dates are universal.