Migrate selected Evernote notes to Day One. Supports tags. Supports pandoc to convert to markdown. No support for attachments yet. Original version at http://veritrope.com/code/export-evernote-items-to-day-one/

Export Evernote to Day One.scpt

(*
◸ Veritrope.com
Export Evernote Items to DayOne
VERSION 0.98.2
December 18, 2015

// UPDATE NOTICES
     ** Follow @Veritrope on Twitter, Facebook, Google Plus, and ADN for Update Notices! **

// SUPPORT VERITROPE!
     If this AppleScript was useful to you, please take a second to show your love here: 
     http://veritrope.com/support

// SCRIPT INFORMATION AND UPDATE PAGE
     http://veritrope.com/code/export-evernote-items-to-day-one

// REQUIREMENTS
    ** THIS SCRIPT REQUIRES YOU TO DOWNLOAD THE DAYONE COMMAND LINE APP:
    http://dayoneapp.com/downloads/dayone-cli.pkg
    
// CHANGELOG
Version 
	0.98.2 (by @robrecord)	- Tidied up code
	0.98.1 (by @robrecord)	- Added support for tags and notebook name (as a tag)
				- Added support for pandoc to convert to markdown
	0.98			- UPDATED TO USE NEW CLI APP
	0.91			- Added Optional Header
	0.90 (Beta 1)		- Initial Release

// RECOMMENDED INSTALLATION INSTRUCTIONS:


// TERMS OF USE:
     This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. 

     To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.


*)

(* 
======================================
// USER SWITCHES (YOU CAN CHANGE THESE!)
======================================
*)
-- IF YOU'D LIKE THE SCRIPT TO NOT CREATE A 
-- "HEADER LINE" FOR THE DAY ONE ENTRY USING
-- THE TITLE OF THE EVERNOTE ITEM, THEN
-- CHANGE THIS VALUE TO "false"…
property dayHeader : true

-- INSTALL PANDOC TO CONVERT TO MARKDOWN? (INSTALL PANDOC WITH HOMEBREW)
property convertMarkdown : false

(* 
======================================
// OTHER PROPERTIES (USE CAUTION WHEN CHANGING)
======================================
*)

property noteName : ""
property noteCreated : ""
property noteHTML : ""
property noteLink : ""
property note_Date : ""
property noteTags : {}
property noteNotebook : ""

(* 
======================================
// MAIN PROGRAM 
======================================
*)

tell application "Evernote"
	set selected_Items to selection
	repeat with selected_Item in selected_Items
		--GET THE EVERNOTE DATA
		my getEvernote_Info(selected_Item)
		
		--CONVERT HTML TO PLAIN TEXT
		if convertMarkdown is true then
			set note_Text to my convert_Markdown(noteHTML)
		else
			set note_Text to my convert_Plaintext(noteHTML)
		end if
		
		--CONVERT DATE TO PLAIN TEXT STRING
		set note_Date to my convert_Date(noteCreated)
		
		--ADD TAGS
		set note_Text to my add_Tags(note_Text, noteTags, noteNotebook)
		
		
		--MAKE THE NEW ITEM IN DAY ONE
		my make_DayOne(noteName, note_Date, note_Text, noteLink, noteTags)
		
	end repeat
end tell

(* 
======================================
// PREPARATORY SUBROUTINES 
======================================
*)
--GET THE EVERNOTE DATA
on getEvernote_Info(theNotes)
	tell application "Evernote"
		try
			set noteID to (local id of item 1 of theNotes)
			set noteName to (title of item 1 of theNotes)
			set noteSource to (source URL of item 1 of theNotes)
			set noteCreated to (creation date of item 1 of theNotes)
			set noteModified to (modification date of item 1 of theNotes)
			set noteTags to (tags of item 1 of theNotes)
			set noteAttachments to {attachments of item 1 of theNotes}
			set noteAltitude to (altitude of item 1 of theNotes)
			set noteENML to (ENML content of item 1 of theNotes)
			set noteHTML to (HTML content of item 1 of theNotes)
			set noteLat to (latitude of item 1 of theNotes)
			set noteLong to (longitude of item 1 of theNotes)
			set noteNotebook to (name of notebook of item 1 of theNotes)
			set noteLink to (note link of item 1 of theNotes)
		end try
	end tell
end getEvernote_Info

(* 
======================================
// UTILITY SUBROUTINES 
======================================
*)

--CONVERT HTML TO PLAIN TEXT
on convert_Plaintext(noteHTML)
	set shell_Text to "echo " & (quoted form of noteHTML) & " | textutil -stdin -convert txt -stdout"
	set note_Text to do shell script shell_Text
	return note_Text
end convert_Plaintext

--CONVERT HTML TO MARKDOWN
on convert_Markdown(noteHTML)
	set shell_Text to "echo " & (quoted form of noteHTML) & " | /usr/local/bin/pandoc -s -f html -t markdown_github"
	set note_Text to do shell script shell_Text
	return note_Text
end convert_Markdown

--CONVERT DATE TO PLAIN TEXT STRING
on convert_Date(noteCreated)
	set AppleScript's text item delimiters to ""
	set m to ((month of noteCreated) * 1)
	set d to (day of noteCreated)
	set y to (year of noteCreated)
	set t to (time string of noteCreated)
	set date_String to (m & "/" & d & "/" & y & " " & t) as string
	return date_String
end convert_Date

--ADD TAGS TO NOTE TEXT
on add_Tags(note_Text, noteTags, noteNotebook)
	set noteTagsText to ""
	if noteTags is not {} then
		repeat with i from 1 to count of noteTags
			set noteTagsText to noteTagsText & "#" & (name of item i of noteTags) & " "
		end repeat
	end if
	if noteNotebook is not "" then set noteTagsText to "Notebook: #" & noteNotebook & "
" & noteTagsText
	
	return note_Text & "

" & noteTagsText
end add_Tags

(* 
======================================
// MAIN HANDLER SUBROUTINES 
======================================
*)

--MAKE ITEM IN DAY ONE
on make_DayOne(noteName, note_Date, note_Text, noteLink)
	if dayHeader is true then set note_Text to (noteName & return & return & note_Text)
	set new_DayOne to "echo " & (quoted form of note_Text) & " | '/usr/local/bin/dayone' -d=\"" & note_Date & "\" new"
	do shell script new_DayOne
	
end make_DayOne

Does this support copying photos from one note?