Pure clock arithmetic for a whistleblowing channel over dates you declare. The page checks your declared acknowledgement date against the 7-calendar-day deadline of Directive (EU) 2019/1937 Art 9(1)(b) and computes the follow-up due date from your declared receipt date plus a declared whole-day basis (the Art 9(1)(f) three-month ceiling as declared days). Every date here is yours: the page holds no report register, no case feed, no investigation state, and no clock.
The acknowledgement window is 7 calendar days from report receipt (Dir (EU) 2019/1937 Art 9(1)(b)); an acknowledgement is within window when it is 0 to 7 days after receipt, and an ack dated before the report is refused. The follow-up due date is receipt plus your declared basis in whole civil days (the Art 9(1)(f) ceiling of three months as declared days; you own the day-count convention). The page never reads the clock: these dates are inputs, not today.
A presence flag you declare for the channel’s records-and-protection duty (Dir (EU) 2019/1937 Arts 9 and 19, pair): the page surfaces it in the run summary, holds nothing, and transmits nothing.