Reports:
Me
April 1 2014 in https://scratch.mit.edu/studios/3854676/activity/

@ZZ9PluralZAlpha
January 27, 2014 in https://scratch.mit.edu/studios/3440279/activity/8/
May 20, 2014 in https://scratch.mit.edu/studios/4177623/activity/

@PintOfMilk
March 18, 2014 in https://scratch.mit.edu/studios/3695354/activity/

@JRR078
January 11, 2005

@customhacker
April, 7 2014 in https://scratch.mit.edu/studios/3892339/activity/3/

@bybb
March 27, 2014 in https://scratch.mit.edu/studios/3825762/activity/

@asivi
July 28, 2016 and March 24, 2014

@Austinato

@Galleigo
April 8, 2014 in https://scratch.mit.edu/studios/3896762/activity/

@DeleteThisAcount
Lots of dates in https://scratch.mit.edu/studios/3639759/activity/1/

@furrypig

@awesome-llama
Lots of dates

@Vuton

@WolfCat67
October 7, 2013 in https://scratch.mit.edu/studios/2818909/activity/4/

@kingare

@DeleteThisAcount
May 12, 2014 in https://scratch.mit.edu/studios/4102257/activity/

@FancyFoxy
May 2, 2014 in https://scratch.mit.edu/studios/4032571/activity/5/

@kenny2scratch
A couple of dates in https://scratch.mit.edu/studios/1696417
A couple of dates in https://scratch.mit.edu/studios/2966624

@
May 1, 2015, April 23, 2015 and May 27, 2014 in https://scratch.mit.edu/studios/4226455/activity/

Theories:

ZLGames wrote:

I think this might happen when someone views a studio but does not actually comment or do anything on it. I'm not sure, though. I haven't tried testing it out yet.

That's a bad theory, since all of the reports I have did not exist at the phantom date time.

PkmnQ wrote:

I think it's because of irrelevant data that just so happened to leak.

This was my theory, but I decided it was not good, because it's some… CSS, no… Javascript… eh…. I don't know, but code rarely leaks in some HTML thing STUFF. But now I don't really know the reason. Come up with a theory!

kingof555 wrote:

i think that there was already a studio with that studio id, that was deleted on the day of that phantom date.scratch just keeps the date, but deletes the activity.that may sound wrong, but to me, it makes the most sense

Quoting from the extra notes:

@JRR078 had a date of January 11, 2005 while Scratch 2.0 was in 2009.

I have no idea if studios existed before, but if they did, i'll believe it.

Extra notes:
@JRR078 had a date of January 11, 2005 while Scratch 2.0 was in 2009.
@asivi has a double phantom date studio. July 28, 2016 and March 24, 2014.
I recently found a studio which has phantom dates AFTER the studio was made. However, I forgot the URL. Luckily, @lance4dragons reported something like that!
https://scratch.mit.edu/studios/1842813/activity/9/ has no phantom date before the studio was created.

Extra reports:
@lance4dragons at https://scratch.mit.edu/discuss/topic/246946/
@pokemongirl1001 at https://scratch.mit.edu/discuss/topic/256139/

PkmnQ wrote:

My browser / operating system: Windows NT 10.0, Chrome 56.0.2924.87, Flash 25.0 (release 0)
A random date appears in my studio.The studio is The new PkmnQ
Here's the picture:

customhacker wrote:

Same.

• b
  
• u
  
• m
  
• p
  

(bump)

PkmnQ wrote:

customhacker wrote:

Same.

Eh, link or screenshot, please.

asivi wrote:

I have an Studio created on February 20, 2017
In Activity i'm seeing:
On July 28, 2016
On March 24, 2014

PkmnQ wrote:

asivi wrote:

I have an Studio created on February 20, 2017
In Activity i'm seeing:
On July 28, 2016
On March 24, 2014

That's the first double date report!

jromagnoli wrote:

PkmnQ wrote:

asivi wrote:

I have an Studio created on February 20, 2017
In Activity i'm seeing:
On July 28, 2016
On March 24, 2014

That's the first double date report!

The first reported, maybe, but probably not the first time it's happened.