The National:

IT’S Royal Week in Scotland. Haven’t heard of it? That’s ok, some people call it Holyrood Week. Still haven’t heard of it? Neither has Buckingham Palace.

And you’d be forgiven for thinking that Buckingham Palace has never heard of a “week” either, given that the Queen’s visit to Edinburgh is only four days long.

Nonetheless, Royal Week, which sees the Queen visit the Scottish capital for a few days at the end of June every year, is suddenly very much on the news agenda.

That couldn’t be anything to do with the royals’ charm offensive to save the Union?

READ MORE: William and Kate's £50k Scotland trip and other taxpayer bills from royal accounts

Either way, news of Royal Week’s existence came as a surprise to many Scots.

That news came in the from of a BBC story about the Queen visiting the “Irn-Bru headquarters” on Monday.

The BBC tweeted: “The Queen has arrived for her first official visit to Scotland since the death of the Duke of Edinburgh.

“The 95-year-old monarch visited the Irn-Bru headquarters in Cumbernauld on Monday as part of Royal Week, also known as Holyrood Week.”

The Irn-Bru visit is something of a new addition to the “week”, which normally sees the Queen offered the keys to Edinburgh, hold an “Investiture” to recognise Scots who have made a significant contribution to society, and throw a garden party at Holyroodhouse.

She may also take part in "the Thistle Service at St Giles' Cathedral" and "undertake a number of regional Scottish engagements which vary from year to year".

The royal's website explains: "Known in Scotland as 'Royal Week', and to others as 'Holyrood Week', these visits celebrate Scottish culture, achievement and community."

That this is "known in Scotland as 'Royal Week'" came as a surprise to many in Scotland.

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One user wrote: "How long has 'Royal Week' been on the go? Did they just dream up this pish as she arrived?"

Another added: “I’ve lived in Scotland since 2001. I’ve never heard of Royal Week or Holyrood Week."

“I’ve lived in Scotland since 1935 and I’ve never heard of it,” one David Justice replied.

Another user added: “Royal Week? Holyrood Week? Who's having the laugh now? Never heard of either. l have lived here all my days this is the first time I've heard of this nonsense.”

A fifth wrote: “ROYAL WEEK! Remember?! Also known as HOLYROOD WEEK!! Remember...? Of course, you do!!!”

Another added: “‘Royal Week / Holyrood Week,’ of course, comes a week after ‘Made Up Friday’ and acts as a warmup for the ever-popular ‘Doesnae Exist Fortnight’.”

Social media users may be forgiven for never having heard of the week before.

While the Earl and Countess of Strathearn’s Twitter account yesterday proclaimed: “Returning to Scotland for Royal Week!”, it had never mentioned it before.

The @royalfamily Twitter account, which acts as the Queen’s, first mentioned the week in 2017.

This is also the first year in which a separate post seems to have been created on the royals’ website: https://www.royal.uk/holyrood-week-2017

The week does, however, seem to be older than that.

We’re not sure how old, but articles exist from 2010 which mention it.

The National: Buckingham Palace

When we called Buckingham Palace for more details on “Royal Week”, the switchboard operator told us they had never heard of it.

We said some people call it “Holyrood Week”, which led them to gather it had something to do with Scotland. Quite what, we’re not sure either.

We’ve put in a request for some more information about when it was started and if its sudden prominence has anything to do with worries about support for Scottish independence, as some on social media have suggested: