text: Title: What is the origin of time for predict function?
  Body: Based on the docs:
  
  > If samples are ordered according to their predicted risk score (in ascending order), one obtains the sequence of events, as predicted by the model. This is the return value of the predict() method of all survival models in scikit-survival.
  
  In my use case I need to predict the order in which individuals will die (in absolute/global time frame) given that they survived till the end (last day) of study.
  I interpret predicted risk scores (using `predict()` function) as relative time to events.
  However, it's not clear to me what is the origin of time for them?
  Is it the time of birth for each individual (which would require adjusting risk scores in my use case), or is it the end of study time?