Event time or failure time values of zero are saved in the OUTSURV=, SURVIVALPLOT=, and FAILUREPLOT= output data sets as 1.49167E-154 in PROC LIFETEST.

As a workaround, you can use the ROUND function to correct the nonzero values. For example, suppose the OUTSURV= data set is named SURV and the event time variable in the TIME statement is T:

data surv;
   set surv;
   T=round(T, 1e-10);
   run;