### Clue: Added time had arisen after injury (4,5)
### Answer: ADAR SHENI 
 ### Explanation: Definition: Added time
An anagram ('after injury') of 'had arisen', for a thirteenth month added 7 times every 19 years in the Jewish calendar to keep the year, otherwise of 12 lunar months, in sync with the seasons – serving essentially the same purpose as a leap year.