Captioning his video, Lee Parkinson from Manchester said: "A solid 365 days of my Triplets, taking one second snippets of film from every single day."
The youngsters - Lily, Harry and Charlie - grow from boisterous 20-month-old babies into boisterous toddlers in the blink of an eye.
Lee, a primary school teacher, explained: "It was incredible watching it back to see just how time flies and how rapidly children grow up.
"Even though it's only one second, you can really start to see how their language and personalities develop."
Check it out:**
The triplets, who were naturally conceived at odds of 10,000 to one, were born prematurely on Mother's Day 2011.
It's good to see the adorable trio are thriving - we bet they're an absolute handful!