Why currency parities move in Christmas Holiday (25.12.2014)?

Hi People,



I've been trading for couple of months. Today is Christmas holiday and systems seem to be closed, we cannot trade.

But EUR/USD moved today (25.12.2014 01:00 GMT+2) from 1.2200 to 1.2240.

If markets are closed how come the parity moves??



Thanks,

Sertac..