Details about subjects listed as available for lessons in the Summary report.
https://docs.api.wanikani.com/20170710/#summary
When the paired subject_ids are available for lessons. Always beginning of the current hour when the API endpoint is accessed.
subject_ids
Collection of unique identifiers for subjects.
Details about subjects listed as available for lessons in the Summary report.
See
https://docs.api.wanikani.com/20170710/#summary