All objects have created and updated date properties. Dates are encoded as strings following the ISO 8601 standard. (2022-06-01T17:18:11.345Z)

On all list endpoints, objects can be filtered by date using the from and to parameters.

curl -X GET \
  'https://api.fidel.uk/v1/programs/e1d96ed3-dfd6-4896-8e57-37dca8b1c394/transactions?from=2019-10-26T00:00:00.000Z&to=2019-10-27T23:59:59.000Z' \
  -H 'content-type: application/json' \
  -H 'fidel-key: sk_test_50ea90b6-2a3b-4a56-814d-1bc592ba4d63'

On the list transactions endpoint the date filtering is applied on the datetime property considering no timezone information. On other list endpoints the filtering is applied on the created property.