When does a contract become void which are contingent on happening of specified event within fixed time____________________

Section 35 When contracts become void which are contingent on happening of specified event within fixed time- Contingent contracts to do or not to do anything if a specified uncertain event happens within a fixed time become void if, at the expiration of the time fixed, such event has not happened, or if, before the time fixed, such event becomes impossible, e.g., A promises to pay B a sum of money if a certain ship returns within a year. The contract may be enforced if the ship returns within the year, and becomes void if the ship is burnt within the year