Which non-canon source does that come from?
The episode itself does not specify a stardate.
Perhaps a calculation based on a comment, or a graphic display?
It's corrrect that the episode
Meld don't have an official Stardate.
The events in Meld take place between the events in
Threshold which has the official Stardate 49373.4 and the events in
Dreadnought which has the official Stardate 49447.0
A long time ago when I created a Voyager Timeline in which also the Voyager novels were included, I used Steve Pugh's Stardate Calculator to convert Stardates into Earth dates.
In that way I managed to calculate that the date for
Threshold (Stardate 49373.4) is the Earth date Tuesday 16th May 2372 and the date for
Dreadnought (Stardate 49447.0) is the Earth date Monday 12th June 2372.
So I simply had to create a Stardate for Meld somewhere between those two episodes with official Stardates. So i simply gave it the Stardate 49390 which is Earth date Monday 22nd may
Note also that i had to put the events in the book
Mosaic (a biography of Kathryn Janeway written by Jeri Taylor) somewhere there too. I gave te events in that book the Stardates 49416.6-49425.4 which are the Earth dates Wednesday 1st June-Saturday 4th June 2372. Since the events in that book take some days, I decided to put it between
Meld and
Dreadnought.
I must also admit that when I rewatched meld a couple of years ago and came up with the idea of a date for the Kal Rekk holiday, i actually had forgotten that the Stardate in
Meld was my own creation and not an official Stardate.
However, 5th June is quite convenient for Kal Rekk, isn't it?
Perhaps. But most reasonable people would understand it's a fictional event for a fictional race in a fictional show from a fictional date.
So we can understand it's a bit of fun.
Besides everything else is in the UFP is earthcentric - the event may get aligned to the Terran standard.
I must also admit that creating the Timeline for the first three seasons of VOY was one of the most funny and inspiring things I've done, in fact it took a lot of time and I had to adjust it a few times in the beginning before I got it in order.
In fact, among the things I've done, I took the liberty to change the official Stardate for the episode Parallax.
The reason was that according to the official Stardate , Parallax would take place at Stardate 48439.7
which is Earth date Thursday 10th June 2371.
Howver, that would be almost seven weeks after the events in Caretaker which took place during Stardates 48308.2-48315.6 which are Earth dates Friday 23rd April-Monday 26th April 2371.
Since I found it highly unrealistic that it would take Janeway almost seven weeks to appoint a new Chief Engineer, I decided to place the events in Parallax a bit closer to those in Caretaker and came up with the change of one digit, to Stardate 48339.7 which is Earh date Tuesday 4 May 2371. A minor change but great benefit.
Or as Tuvok should say: "Quite logical"
The Voyager Timeline for seasons 1-3 and the page "Voyager Mysteries and how to solve them" was some of the most inspiring and funny things I've done (both thoste creations are available on the Kes Website). I'm especially proud of how I solved the problem with Voyager's waste of shuttles and torpedoes by coming up with "The Shuttle and Torpedo Building Team.
Both those pages are still under development because of certain issues I may stumple on.
So there is a lot of fun in all this!
I'm actually toying with a Timeline for DS9. But that will be more difficult since many of the episodes in this fantastic series don't have Stardates.
But it is a challenge, isn't it!