Handle timestamp overflow in Python load script
Handle timestamp overflow in Python load script

When loading a set of records, redefine the first timestamp to t = 0.
This handles one occurrence of timestamp overflow. Warn if there are
additional overflows. Note, this would require recording data for almost
5 days.

oliverlee/phobos,oliverlee/phobos,oliverlee/phobos,oliverlee/phobos