MetaTrader Forex Analyse Historical Data Project(repost)

I want someone to analyse historical data for the 12 currency pairs. You can do this via a programming option, or through your own research. Basically I want to see if there are certain dates/time periods where pairs move up/down by a certain amount, based on historical data. For example - the GBP/USD may historically move +0.12% on February 15th each year, based on the last 10 years worth of data. Or, the EUR/USD may historically move -0.13% in a two day period, June 11th-13th. You don't have to cover every eventuality - I'm more wanting the biggest/most prevalent differences. This is to be done for the last 15 years worth of data. It is really 'seasonality' study for different currency pairs. The final work must be a complete list of the pairs, and then the most significant historical +/- dates for each pair. I realise this may seem somewhat vague, so please ask questions if you need clarification.