The study looked at stock markets in Czech Republic, Hungary, and Poland from 2006 to 2012 to see if certain days of the week had an impact on stock returns. They used a special model to analyze the data and found that there was very little evidence of a consistent pattern. Daily calendar anomalies were rare, unstable, and often went against what was expected. The financial crisis did not seem to make a difference in this pattern. Overall, it seems that the day of the week does not have a big effect on stock markets in Central Europe.