The rail operator says many services are expected to run as normal during the latest industrial action by RMT members, but Southern has confirmed that certain services will not be running at all.
Below are some of the key alterations:
* No Rye to Ashford International shuttle services during the morning and evening peaks. However Southern says it plans to operate most services between Ashford International and Brighton. The firm plans to operate replacement buses between Rye and Ashford International.
* Some trains between London Bridge and Brighton, Eastbourne or Littlehampton will not operate (details below).
* Some services between Brighton and Seaford/Eastbourne/Hastings/Ashford and between Brighton and Bognor Regis/Littlehampton/Portsmouth Harbour/Southampton Central will not operate and others will have fewer carriages than normal.
* Most services that only run between Brighton and Hove will not operate.
Replacement bus services will be in place between Ashford International, Rye and Hastings only.
The following services are not scheduled to run at all tomorrow:
* 07:12 Eastbourne to London Bridge
* 07:32 Brighton to London Bridge
* 17:41 London Bridge to Littlehampton
* 17:57 London Bridge to Brighton
* 06:35 Ashford International to Rye
* 07:06 Rye to Ashford International
* 07:41 Ashford International to Rye
* 08:14 Rye to Ashford International
* 18:00 Ashford International to Rye
* 18:31 Rye to Ashford International
* 19:02 Ashford International to Rye
* 19:33 Rye to Ashford International
* 05:46 Hastings to Ashford International
* 17:09 Hastings to Ashford International
* 19:59 Ashford International to Hastings
* 05:49 Bognor Regis to Littlehampton
* 06:35 Littlehampton to Bognor Regis
* 07:36 Bognor Regis to Littlehampton
* 07:45 Littlehampton to Brighton
* 08:01 Littlehampton to Brighton
* 08:53 Brighton to West Worthing
* 09:43 West Worthing to Brighton
* 11:13 West Worthing to Brighton
* 17:13 West Worthing to Brighton
* 15:57 Littlehampton to Portsmouth & Southsea
* 16:24 Brighton to West Worthing
* 16:59 Portsmouth & Southsea to Littlehampton
* 21:53 Littlehampton to Brighton
All passengers are being advised to check before they travel.
Tickets can be accepted by some other train operators’ services, the tube, London buses or local buses, including Southeastern, Brighton & Hove Buses, Thameslink and South West Trains.
For further information about the strike and which services are affected, visit the Southern website here