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# Article 1 — Reference time

**Commission Delegated Regulation (EU) 2017/574 · superseded — not in force · OJ L 87, 31.3.2017 · dated 7 Jun 2016 [no longer in force]**

*No longer in force · Commission Delegated Regulation (EU) 2017/574, OJ L 87, 31.3.2017 · Checked against EUR-Lex on 26 Oct 2026 · [Official source](https://eur-lex.europa.eu/eli/reg_del/2017/574/oj/eng)*

Operators of trading venues and their members or participants shall synchronise the business clocks they use to record the date and time of any reportable event with the Coordinated Universal Time (UTC) issued and maintained by the timing centres listed in the latest Bureau international des poids et mesures Annual Report on Time Activities. Operators of trading venues and their members or participants may also synchronise the business clocks they use to record the date and time of any reportable event with UTC disseminated by a satellite system, provided that any offset from UTC is accounted for and removed from the timestamp.