Please Busby, you have been on forum long enough to know that in a number of places Sunday is Forbidden for washing; as OP previously stated although may have noticed somebody washing on a Sunday, not a concern to her, and that all washing is charged to the card of whoever uses their card. In theory that is how it is meant to happen to their cards & that is what OP is asking about.

I once lived in a building in which the washing days were not identical with the calendar days. Someone who was allocated Thursday, for example, could wash from Wednesday at 18h00 up until Thursday at 17h59. All of that time was called "Thursday". Correspondingly, "Friday" began on Thursday at 18h, and so on.

You could check that in your house rules, or ask your landlord. If the days are so defined, that could perhaps result in the Card and the Card-Reader registering days that don't correspond to the calendar.

Well, Moggy, there is always a difference between was is 'allowed' and what isn't. It may be a surprise but there are those who, even if occassionally, do wash on Sundays. However my suggestion was made in the form of a hint at possibilities - shades of Sherlock Holmes so to speak.

Likewise, here. it's 5PM of the day before, until 5PM of the day.

Tom

It's a repeating issue. Obviusly OP is bothered enough to ask, whether she wants to take the effort is up to her. Mileages differ.

Indeed. However, if there is indeed a problem you need proof (or strong hints), so you probably need their cooperation. Otherwise you'll simply be ignored as "the complainer tenant", just as it already happened.