I hope it’s okay to start this thread 
This is where we can make our guesses as to when we think the 75 millionth postcard will be registered on Postcrossing. Please make your prediction in UTC format. Anyone is welcome to change their prediction as often as they want to.
I go first this time. Now we have December there making things interesting - Germans will send cards a lot but also Christmas time will slow us down.
However 10th January 2024 first popped in my mind so I’ll go with it.
10.1.2024 at 9.08pm UTC
I’m going with 8th January, 1.08 pm.
January 8th @ 8:14 pm UST!
Ahh our answers are so close (if we dont count time zones) I just closed my eyes and saw January 8th lol, the day after returning home from my New York trip!
4.1.2024 11:23
I’m going with January 10, 2024 1:13 AM UTC
My guess: 5th January 2024, 15:24 UTC
March 1st, 2024 at 7:45pm UTC
Well, just had a look at my crystal bowl. And it says: 3rd January 2024, about 11.59 pm UTC. 
Though my guesses are usually not the best … and again, it looks like I made the earliest guess. 
Let’s see …
10th January 24 20.00 UTC For me this time please .
Do you know how many hours you are behind UTC? It helps if we all give our predictions in the same time zone. 
Looks like 7 hours?
07/Jan/2024 22:00 for me please.
I over compensated on a WPD effect for the 74MM so hoping for better things this time
Beside the calcuguessing, it’s always a challenge not to see the other predictions before posting one’s own.
I had to flip a coin between opti- and pessimism. Today my back hurts, so the late guess won. Well, at least now I am set to be surprised positively start of the next gregorian year.
So no75 will be on:
11.01.2024
11.01 UTC
a card from AM to AZ(ing)
(I could think about other connections that should be established urgently, but hey, this is the real world, not fantasyland)
edit: I changed the order of the countries involved, because isn’t amazing a motto/title for 2024 we all could need?
13.01.2024 13:38 UTC
FI → USA
and I talked to a non-postcrosser this morning, who guessed Jan 07 11:37 UTC at 7:40. I’m curious if his prediction is better than mine 
My guess: 4th January 2024, 18:12 UTC
My guess: 2nd of January 2024, 16:39 UTC 
Here we go again! My guess: 9th January, 21:17 UTC
Oh wow… I’m the only one who doesn’t think we’ll reach 75 million till March.