Yes, the manual sorting will be synced across all devices.
Regarding the possibility to set a date and time, we have currently on purposely only reserved setting a specific time to a note if you link the note with a calendar event. If you manually assign a date you can only set it to a day. We feel that the number of people that really need the granularity of date + time is very limited and doesn’t warrant the extra complexity that the UI would require.
It also brings up a thing I noticed in the example you gave here, you seem to make a single note for each entry for a bird you observed. Of course I’m not sure how much info you add for each bird you observe. If it’s significant the hierarchy you pick might be the right one:
Project (per day / trip)
Note for sighting 1
Note for sighting 2
etc
However, in case each of these notes contains very little information (and that’s the question), it might be better to switch to a different hierarchy
Project
Note for trip / day 1 (date assigned for the day)
Paragraph for sighting 1
Paragraph for sighting 2
Note for trip / day 2
Agenda’s performance becomes less great if you add >100 small notes (1-2 paragraphs of text) to a single project. It can then be better to have fewer notes and use headings inside those for example:
So instead of:
You could try:
Of course it all depends on the number of items, amount of text etc, so there’s no single “right” way of doing things, but sometimes it can help to rethink the hierarchy if you hit certain limits of the app / find that you are “fighting the system”.