| Date | Day | Commons day type | Commons praying | Lords day type | Lords praying |
|---|---|---|---|---|---|
| Sunday | 21st | Prorogation | False | Prorogation | False |
21st September 1873 forms part of the prorogation between the 5th session and the dissolution of the 20th Parliament, being the 5th prorogation of that Parliament.
Papers laid during this prorogation are reported by both Houses in the 1st session of the 21st Parliament.