Central European Time Change
On Sunday October 31st, 2021, 3 AM CEST will change onto 2 AM CET.
ISOT
Trading day for Sunday October 31st, 2021 will have 25 trading hours. 1st trading hour will be equal to 0:00 AM - 1:00 AM, 2nd trading hour will be equal to 1:00 AM - 2:00 AM (CEST), 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)... until 25rd trading hour will be equal to 11:00 PM - 00:00 AM.
Representation of trading periods at IDM Dashboard for the trading day October 31st 2021 will be as following:
- trading hour corresponding with period 0:00 – 1:00 will be represented as „00 – 01“, or „T00-01“ during October 30th 2021,
- trading hour corresponding with period 1:00 – 2:00 will be represented as „01 – 02a“, or „T01-02a“ during October 30th 2021,
- trading hour corresponding with period 2:00 – 3:00 (CEST) will be represented as „02a – 02b“, or „T02a-02b“ during October 30th 2021,
- trading hour corresponding with period 2:00 – 3:00 (CET) will be represented as „02b – 03“, or „T02b-03“ during October 30th 2021.
ISZO
Trading day for Sunday October 31st, 2021 will have 25 trading hours meaning that daily schedule 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 (CEST), 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) ... 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 31st 2021. 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 and production sites for trading day October 31st, 2021 will consist of 100 periods. In case of submission of measured values through automated interface, 12th period will have range of 202110310245-202110310200.
RRM
Trading day for Sunday October 31st, 2021 will have 25 trading hours. 1st trading hour will be equal to 0:00 - 1:00, 2nd trading hour will be equal to 1:00 - 2:00 (CEST), 3rd trading hour will be equal to 2:00 - 3:00 (CEST), 4th trading hour will be equal to 2:00 - 3:00 (CET)... until 25th trading hour will be equal to 23:00 - 24:00
"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:
- 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.