| Date | Day | Commons day type | Commons praying | Lords day type | Lords praying |
|---|---|---|---|---|---|
| Sunday | 20th | Prorogation | False | Prorogation | False |
20th September 1840 is in the prorogation between the 3rd and 4th sessions of the 13th Parliament, being the 3rd prorogation of that Parliament.
Papers laid during this prorogation are reported by both Houses in the 4th session of the 13th Parliament.