Hi @Alex_B_Centrifuge
I actually already had something very similar on my list to post to the Treehouse site from @James (as per this Slack thread: https://treepl.slack.com/messages/CC1074CQM/p1621300167000700)
However, there are things I like about both.
I like yours due to:
- being more readable/understandable.
- creates variable you can use for all periods (days/months/years) so you can use any/all period types regardless of the date difference.
I like Jame’s due to:
- covers sec/min/hr/days/mths/yrs (I added ‘weeks’)
- the separation of logic from markup
So I added some bits and combined all into one ‘super snippet’ 
Let me know if you can see any improvements to make / flaws to fix: