I would like to observe the event when the exchange rates are fetched from Webservicex. Is there such an event that I can observe? I haven't been able to find one in the docs and am not too happy with setting a up a cron.
From what I'm seeing in
Mage_Directory_Model_Currency_Import_Webservicex and the whole Mage_Directory module, there is no
dispatchEvent() method included. You could just hook on events from basic save/update methods then.
You did not mention what you're trying to achieve but as a general advice, best practise in this case would be to extend the class on your own, put your own events in and observe them.