The PTAGIS API provides a few endpoints to directly query PIT tag data. The /data/events endpoint returns a summary of the events recorded in PTAGIS for a single PIT tag code. This endpoint has been updated as of 08:00 PDT so that Observation events are aggregated at an hourly resolution and grouped by tag code and site. For each hour, the observation Event Date is set to the latest (last) observation timestamp recorded for that tag at that site within the hour.
Prior to this update, the events endpoint returned the Event Date as a datetime value with the time always set to midnight (e.g. 4/1/2026 00:00:00). Observation events were aggregated by tag code and site, and the reported Event Date was the latest date recorded for the tag at that site.
See the Data section on the PTAGIS API swagger documentation page for more information about direct PIT tag data query through the API. See this FAQ for more information on options for programmatically retrieving PIT tag from PTAGIS.