In Obsidian, the name of the daily note is the same as what you see in file explorer. In Logseq what you see as the daily note name and what it shows in files explorer are different.
I will share what I have done to keep them in sync in Obsidian and Logseq, and you can extrapolate it to your naming convention.
I like to see my daily notes in the format YYYY-MM-DD dddd, which translates to - for example 2021-07-17 Saturday… today’s date…
To do that go to daily notes in Obsidian and set that up as the format. Any new daily note you create in Obsidian will have this naming convention and will show up in file explorer in the same format as well.
Logseq, by default, has the file explorer format YYYY_MM_DD if you see the file in the file explorer. To change this to YYYY-MM-DD dddd format, you will need to make a change to the Logseq config.edn and add this entry
:journal/file-name-format “yyyy-MM-dd EEEE”
All new daily notes in the file explorer will show up in YYYY-MM-DD dddd format after you make this change.
Older daily notes names will not change, you will have to manually change them or use the tool that Luhmann has suggested in one of the posts here.
Ideally you would also need to go to settings in Logseq and change the Preferred date format to “yyyy-MM-dd EEEE”
This should solve your problem…
If, instead of YYYY-MM-DD dddd, if you want MMM do, yyyy, as your daily note naming convention, you would need to make the changes in both Obsidian and Logseq in the same places…
Hope this helps…