If you had shower on Monday(2.1.2017 18:00), then you had no shower on Tuesday (3.1.2017 18:00) and then had shower again on Wednesday (4.1.2017 18:00)
And it is still 4.1.2017 on-going day meaning the day is not over yet.
Would you say you have not showered for two or one day?
Before you read this, tell me what you would say and after that read this:
In my country, we would say I have not showered for one day. Because I showered on Monday so no count, Wednesday showered too, so no count as well. Tuesday =no shower so count. You get my idea?
But in reality you have not showered for two days...
So what do you think? Can you explain to me how can I figure out the last time the person has for example uploaded a video if he tells me he has not uploaded a video for 3 days already?
Let's say today is 5.1.2017 what day was last time he uploaded video?