Hello, This has nothing to do with R-help and I apologize in advance but this is really, really strange. A SO user is still using R 1.0.1: https://stackoverflow.com/questions/53096176/how-do-i-change-the-str-of-my-diff-time-from-atomic-to-num#comment93089103_53096176 Imagine if R wasn't for free... Rui Barradas