Central European Time Change

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10/24/2017

On Sunday October 29th 3 AM, CEST will change back to 2 AM CET.


ISOT

Trading day for Sunday October 29th will have 25 trading hours. 1st trading hour will be equal to 0:00 AM - 1:00, 2nd trading hour will be equal to 1:00 AM - 2:00 AM, 3rd trading hour will be equal to 2:00 AM - 3:00 AM (CEST), 4th trading hour will be equal to 2:00 AM - 3:00 AM (CET), 5th trading hour will be equal to 3:00 AM - 4:00 AM... until 25th trading hour will be equal to 11:00 PM - 00:00 AM.

Representation of trading periods at IDM Dashboard for the trading day October 29th 2017 will be as following:

  • 1. trading hour corresponding with period 0:00 – 1:00 will be represented as  „00 – 01“, or „T00-01“ during October 28th 2017,
  • trading hour corresponding with period 1:00 – 2:00 will be represented as „01 – 02a“, or „T01-02a“ during October 28th 2017,
  • trading hour corresponding with period 2:00 – 3:00 (CEST) will be represented as „02a – 02b“, or „T02a-02b“ during October 28th 2017,
  • trading hour corresponding with period 2:00 – 3:00 (CET) will be represented as „02b – 03“, or „T02b-03“ during October 28th 2017.

Other trading hours will be represented appropriately to local time (CET) and the last trading hour will be represented as following:

  • 25. trading hour corresponding with period 23:00 – 24:00 will be represented as „23 – 24“, or „T23-24“ during October 28th 2017.


ISZO

Daily schedule for trading day October 29th will consist of 100 periods instead of 96. 1-4th period will be equal to 0:00 AM - 1:00 AM, 5-8th period will be equal to 1:00 AM - 2:00 AM, 9-12th period will be equal to 2:00 AM - 3:00 AM (CEST), 13-16th period will be equal to 2:00 AM - 3:00 AM (CET), 17-20th period will be equal to 3:00 AM - 4:00 AM... until 97-100th period will be equal to 11:00 PM - 00:00 AM.

Intraday registration will run in 25 time sequences corresponding to the respective trading hours for Sunday October 29th. The 3rd time sequence of intraday will be equal to 2:00 AM - 3:00 AM (CEST) and the 4th time sequence of intraday will be equal to 2:00 AM - 3:00 AM (CET). Registration of changes in daily diagrams for the intraday trading hour will be closed 30 minutes before the beginning of the trading hour. Changes in daily diagrams for the intraday trading hour will be confirmed 15 minutes before the beginning of the trading hour.


ISOM/ISCF

Measurement types A and B for trading day October 29th will consist of 100 periods (2nd trading hour will occur twice). In case of submission of measured values through automated interface, 12th period will have range of 201710300245 - 201710300200.


RRM

Trading day for Sunday October 29th will have 25 trading hours. 1st trading hour will be equal to 0:00 AM - 1:00, 2nd trading hour will be equal to 1:00 AM - 2:00 AM, 3rd trading hour will be equal to 2:00 AM - 3:00 AM (CEST), 4th trading hour will be equal to 2:00 AM - 3:00 AM (CET), 5th trading hour will be equal to 3:00 AM - 4:00 AM... until 25th trading hour will be equal to 11:00 PM - 00:00 AM.

Change in reporting relates to users reporting their reports via automated interfaces, XML file upload or users using the web form for reporting of trades containing price interval quantity details (web forms: Standard contract – Universal, Standard contract – Diagram).

Clock change hour in the price interval quantity details of a trade shall be reported by repeating the time period of the third trading hour in local time:

  • 1. trading hour corresponding with period 0:00 – 1:00 will be reported as 00:00 – 01:00,
  • trading hour corresponding with period 1:00 – 2:00 will be reported as 01:00 – 02:00,
  • trading hour corresponding with period 2:00 – 3:00 (CEST) will be reported as  02:00 – 03:00,
  • trading hour corresponding with period 2:00 – 3:00 (CET) will be reported as 02:00 – 03:00.

Keeping the sequence of trading periods will ensure correct reporting of hours of the clock change day.