Comment by vitorbaptistaa

Using the excellent jq [1] command

  wget https://gist.githubusercontent.com/jorin-vogel/7f19ce95a9a842956358/raw/e319340c2f6691f9cc8d8cc57ed532b5093e3619/data.json
  echo 'Name,Credit Card' > 20150425.csv
  jq -r '.[] | [.name, .creditcard] | @csv' data.json >> 20150425.csv

This consider that all timestamps are from 2015/04/25 (which is the case with the example dataset, but might not be).

[1] https://stedolan.github.io/jq/