*Update* [MATS Production]: Ad-hoc maintenance - DST Preparation - Impact on orders
Affected Period
Status
Closed
Category
Semopx
Run Type
Created
Last Updated
Updated Message 22/10/2025;
Dear Member,
The maintenance is now finished and the SEMOpx Trading System is available.
Order submission for DST day (trading day 25/10) is now available.
It is now possible to connect to the MATS Trading System.
Thank you for your understanding,
Kind regards
SEMOpx Team
________________
Original Message 20/10/2025;
Dear Member,
As part of our preparation for the upcoming Daylight Saving Time (DST) on 26/10/2025 (Trading Day 25/10/2025), SEMOpx will perform a maintenance on 22/10/2025 at 15.15 BST until 16.00 BST to ensure full readiness for the first DST change in MATS.
During this timeframe, it will not be possible to connect to the MATS Trading System.
This will impact:
- Order submission for DST day (trading day 25/10) will be deactivated as of now, 20/10/2025
- All active orders for DST day (trading day 25/10) will be deleted
- Users will need to re-submit their orders for DST day (trading day 25/10) as of Wednesday 16:00 BST
We apologize for the inconvenience and remain available if needed.
We kindly request you to also inform your colleagues about this.
Kind regards,
SEMOpx Team