Data analyst internship project: compare delivery timestamps across time zones

Original invented practice inputs.

Task: A timestamp audit showing original values, zone assumptions and elapsed minutes.

Start with input.json and the CSV tables. Record your method before opening answer-key.json. Keep a changed input and explain how its result differs.

Technical reading:
https://docs.python.org/3/library/zoneinfo.html

A result from this fixture is independent practice work; describe only work you actually complete.
