| Date | Day | Commons day type | Commons praying | Lords day type | Lords praying |
|---|---|---|---|---|---|
| Friday | 20th | Prorogation | False | Prorogation | False |
20th August 1858 is in the prorogation between the 2nd and 3rd sessions of the 17th Parliament, being the 2nd prorogation of that Parliament.
Papers laid during this prorogation are reported by both Houses in the 3rd session of the 17th Parliament.