Well, we've finally reached the end of the 2019 summer transfer window and the concluded day certainly didn't dissapoint.

Celtic and Rangers spent wisely to bring in quality signings and clubs up and down the Scottish Premiership wheeled and dealed until the window slammed shut.

Here is a simple break down of the key comings and goings on the final day:

Celtic

In: Jeremie Frimpong (Man City), Greg Taylor (Kilmarnock), Lee O'Connor (Man Utd)

Out: Ewan Henderson (Ross County), Jack Aitchison (Forrest Green)

Hamilton

In: Adrian Beck (Royale Union Saint-Gilloise)

Hibernian

In: Jason Naismith (Peterborough United)

Out: Sean Mackie (Dundee)

Livingston

Out: Gregg Wylde (released)

Kilmarnock

In: Osman Sow (Dundee United), Harvey St. Clair (Venezia), Connor Johnson (Wolves)

Out: Greg Taylor (Celtic), Greg Kiltie (Dunfermline Athletic loan)

Motherwell

In: Mark O'Hara (Peterborough United)

Out: Craig Tanner (released), Adam Livingstone (Morton loan)

Rangers

In: Ryan Kent (Liverpool)

Out : Graham Dorran (released), Joe Dodoo (released)

Ross County

In: Ewan Henderson (Celitic)

Out: Davis Keillor-Dunn (Released)

St Johnstone

In: Anthony Ralston (Celtic), Jason Holt from (Rangers)

St Mirren

Out: Jack Baird (Greenock Morton)

Image source, BBC Sport

Image source, SNS

We all rememeber our first transfer deadlie day. But how many can you remember form the rich annals of Scottish football history?

Test your knowledge right here with our transfer deadline day quiz. My best score was 7/10.

Hibs have confirmed the signing of Jason Naismith on a season-long loan from Peterborough United.

The right-back signed a three-year contract with the League One side in 2018 from Ross County and went on to make 50 appearances last season, but has since been deemed surplus to requirement.

Hibs coach Paul Heckingbottom told the club website: “Jason is someone who knows the league and has done well up here before. He’s a competitive player who will add real presence to our squad.

“Jason also showed his enthusiasm to come and play for Hibernian by helping push through the deal in time.”

Jason said: “I’m delighted we were able to get the deal over the line and I’m looking forward to getting started.

“No-one has to tell me how big a club Hibernian are and when I heard about their interest I didn’t have to think twice.

“I’m looking forward to meeting up with the rest of the boys this week and getting to work.”

Image source, SNS

New Celtic signing Lee O'Connor won't stick around in Glasgow for long, with internatioal duty demanding his immediate attention from tomorrow onwards.

However, the young defender is adamant that he can't wait to settle in at Celtic and start fighting for a first-team spot.

Speaking to Celtic TV, O'Connor said: “It feels surreal at the moment but I’m just looking forward to getting the international break over with and then starting with Celtic.

“I found out last weekend about Celtic’s interest, and it went from there. Today was a bit hectic but I’m just glad to get it through before the window shuts.

“The Irish squad met up this morning and I spoke to the manager, Stephen Kenny, and he was fine about me coming here today. I’ll meet up them again tomorrow for training.

“I’m a versatile player. I can play anywhere across the back four or midfield if needed. I’d say that I’m a wholehearted defender. I love defending and tackling, but I like to get forward as well. First and foremost, though, I am a defender.”

Image source, Getty Images

Image source, BBC Sport

Ryan Kent has completed his £7m switch from Liverpool to Rangers on a four-year deal.

The 22-year-old Englishman spent last season on loan at the Scottish Premiership side, making 43 appearances and scoring six goals.

Kent featured for Liverpool during pre-season, but his only competitive game for the Premier League club in January 2016.

Hibernian defender Sean Mackie has joined Dundee on loan for the remainder of the season.

Celtic have signed Republic of Ireland U21 defender Lee O'Connor on a four-year deal from Manchester United.

Image source, BBC Sport

Although the transfer window technically shuts at 12, transfer deals will still be getting announced afterwards as paperwork and confirmation drips out of the offices at Hampden.

We've refilled our stock of Haribos and just poured our fourteenth cup of coffee so we'll be here till 1am. Be sure to stick around too.

Image source, SNS

Dunfermline Athletic have confirmed the signing of Kilmarnock midfielder Greg Kiltie on a season-long loan.

Kilmarnock have confirmed the signings of Harvey St. Clair and Connor Johnson on season-long loans from Venezia and Wolves respectively.

Image source, BBC Sport

We're still expecting Ryan Kent's £7 million move to Rangers to go through before the clock strikes 12 but the newspapers have to begin writing tomorrow's back pages.

Can we expect a few altered editions before they go to press?

Just over 30 minutes left of the transfer window. Here is the verdict from some Scottish football fans. Get in touch with your thoughts by tweeting us at @BBCSportScot, external.

Mark: Kent is a great signing for Rangers, by far the best player in the team last season in the matches that I saw. Should have signed him during the summer and not waited until after the Euro and Celtic games. (Rangers)

Jamie: Sitting here at work in Wellington, New Zealand confidently expecting Hibs to announce a couple of defensive midfielders, a winger and a striker before the window slams shut. I suspect I (and all other Hibs fans) may be disappointed... (Hibs)

Anon: I'm happy enough with the signings Hearts have made this summer. It's only the coaching, tactics, formation, style of play, form and confidence that now needs changing. (Hearts)