First, the author is actually wrong. The date is not 5 years before you submit, but is 5 years before the form is received by the home office! So there are a few days of uncertainty, depending on how fast Royal Mail was with the physical documents.
Additionally, I did a request for my information from the home office prior to filling in my form. After all, you have the right to request the information they have on you that will be used to verify your form. Kafka would be proud.
Let me tell you, Home Office doesn't have a clue where you were 5 years ago. It had approximately 50% of my trips, and frequently only had only one leg of the journey. Plane, ferry, train, sailboat, ... it didn't matter. It seems like they have not been keeping the information very well.
As someone who's been through that dance twice, it's 5 years from the time (well, day) you press "Submit" if you're applying online, or $RANDOM days of Royal Mail nonsense if you choose to apply by post.
I agree though, the Home Office doesn't have a way of knowing where you were fore sure 5 years ago unless they got someone to go through your "days in and out of the UK" list and vetted/cross-referenced it. And even then it'd likely be incomplete and they'd have to guess.
My surmise is that they look at the level of effort you've put in to filling out that detail, and if the total days in/out isn't particularly a borderline case, then they just wave that bit through.
I would have thought that the point is that you're supposed to be there continuously for some considerable duration (and having worked through other processes of legal immigration) before applying for citizenship.
So the idea of trying to figure out exactly which day five years in the past you have to mention seems odd to me. If there's really no care being paid to the intervening time... well if you're trying to exploit a loophole like that I think I'd prefer that it's difficult... ?
i think they meant online, which could be different?
> It had approximately 50% of my trips, and frequently only had only one leg of the journey
Relevant current news: Home Office denying child benefits to 1000s of people because they had incomplete data of people vacation trips, so people were thought to have emigrated and never returned [0]. Some people who never even left (due to cancelled flights, denied boardings etc.) were also affected.
[0] https://www.theguardian.com/politics/2025/nov/01/hmrc-likely...