Seasonal Analysis of Stocks

[Evelyn Millar <ibnot@xxxxxxxxx>]

Good day. 

Does anyone know of a tool that I can use to calculate the seasonality of stocks? 

I am looking for a tool, rather than a service as my focus is on non US Stocks. 

Here is a ree service that you might want to look at for US Stocks. 
http://www.gregthatcher.com/Stocks/Default.aspx 

Thanks in advance. 
Evelyn