Tycho Brahe days days in the year pregnant with misfortune, wherefore in Denmark, up to this very day, the laboring class call such days on which they happen to meet with some unfortunate accident, Tycho Brahe's days." In his travelogue "A Poet's Bazaar", Hans Christian Andersen alludes to the fact that Tycho Brahe died in exile in Prague, observing that "Denmark owns not even his dust; but the Danes mention his name in their bad times, as if a denunciation proceeded out of it: 'These are Tycho Brahe's days!' say they." However, no mention of the Tycho Brahe days is actually found in
Tycho Brahe science on one hand and religion and astrology on the other. Using his large herbal garden at Uraniborg, Tycho Brahe produced several recipes for herbal medicines, using them to treat illnesses such as fever and plague. In his own time, Tycho was also famous for his contributions to medicine; his herbal medicines were in use as late as the 1900s. The expression Tycho Brahe days, in Scandinavian folklore, refers to a number of "unlucky days" that were featured in many almanacs beginning in the 1700s, but which have no direct connection to Tycho Brahe or his work. Whether because he