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Timetable and operating hours

Working calendar 

The working calendar of Euronext Securities Porto (INTERBOLSA – Sociedade Gestora de Sistemas de Liquidação e de Sistemas Centralizados de Valores Mobiliários, S.A.) is based on the calendar defined for the TARGET2 System (Trans-European Automated Real Time Gross Settlement Express Transfer System).

Thus, the services managed by Euronext Securities Porto, during the year 2024, will not be available on Saturdays and Sundays and on the days outlined on the table.

Please note that the working calendar for 2024 is available in the Notice No. 23/1132.

This information does not replace the necessary consultation of the Regulations in force.


New Year 

Good Friday 

Easter Monday 


Boxing Day

Operating hours

The operating hours of the centralised systems and settlement systems managed by Euronext Securities Porto are based on the operating hours of the T2S platform – TARGET2-Securities and are set out in the notice no. 0611/2021.

Schedule T2S Time CET

Start of Day – SoD

Change of business date 18:45
Preparation for Night Time Settlement 18:45 – 20:00

Night Time Settlement (NTS)

Start of NTS 20:00
First Cycle, with five sequences  
Last Cycle, with partial settlement in sequence X  
Real time Settlement (Starts if the NTS ends before 03:00 CET / 02:00 WET)  
Maintenance Window in weekday (optional) 03:00 – 05:00
Maintenance Window from Saturday until Monday (required) 02:30 – 02:30

Real time Settlement

05:00 – 18:00
Partial Settlement  
Cycle 1 08:00 – 08:30
Cycle 2 10:00 – 10:15
Cycle 3 12:00 – 12:15
Cycle 4 14:00 – 14:15
Cycle 5 15:30 – 16:00
DVP (Delivery versus Payment) cut-off 16:00
Collateral reimbursement 16:30
BATM / CBO cut-off 17:40
Inbound LTO cut-off / Automatic cash sweep 17:45
FOP (Free of Payment) cut-off 18:00

End of Day – EoD

  • Please Note: Portugal uses WET (Western European Time), which is -1 hour than CET (Central European Time).
  • Acronyms:
    • BATM – Bilaterally Agreed Treasury Management
    • CBO – Central Bank Operations
    • LTO – Liquidity Transfer Orders