The Thirty Years' War broke out with the Bohemian Revolt in May 1618. Spain was being ruled by Habsburgs, and it was involved in the politics of HRE. Once the news of the revolt reached Spain, they sent an army to Bohemia and defeated the Bohemian forces in the Battle of the White Mountain on 8th November 1620.
I came to know from a reliable source that the news of the Bohemian took a few months to reach Spain. This seems long, even by early modern standards. How much time would it generally take for such an important news to reach from Bohemia to Spain in early 17th century? Was there any particular reason why it took so long, especially given that Spain was involved in politics of HRE?
I can't find any freely available source on the internet to back this up (and the original source is a purchasable lecture series), but I don't think there is any reason why the instructor would lie about this.