### Clue: In the end, Don Quixote wasting time, roaming when season ends (7)
### Answer: EQUINOX 
 ### Explanation: Definition: when season ends
An anagram ('roaming') of N ('in the end, do**N**') plus 'Quixo[t]e' minus the T ('wasting time'). The equinoxes mark roughly the end of winter and summer.