diff --git a/chezmoi/dot_zshrc.d/executable_notes.sh b/chezmoi/dot_zshrc.d/executable_notes.zsh
similarity index 82%
rename from chezmoi/dot_zshrc.d/executable_notes.sh
rename to chezmoi/dot_zshrc.d/executable_notes.zsh
index f3fde76..e4be69a 100644
--- a/chezmoi/dot_zshrc.d/executable_notes.sh
+++ b/chezmoi/dot_zshrc.d/executable_notes.zsh
@@ -43,7 +43,7 @@ notes() {
 
 				'commit')
 					git add .
-					git commit -m "notes commit $(date)"
+					git commit -m "notes commit $(strftime '%a %d %b %Y %r %Z')"
 					;;
 
 				'push')
@@ -79,13 +79,12 @@ notes() {
 	(
 		set -euo pipefail
 
-		readonly NOW="$(date +%s)"
-
-		readonly FILE_PATH="${NOTES_DIR}/$(date -d "@${NOW}" +'%Y/%m/%Y-%m-%d').md"
+		readonly NOW="$EPOCHSECONDS"
+		readonly FILE_PATH="${NOTES_DIR}/$(strftime '%Y/%m/%Y-%m-%d.md' "$NOW")"
 
 		mkdir -p "$(dirname "${FILE_PATH}")"
 		if ! [ -e "${FILE_PATH}" ]; then
-			echo -e "# $(date -d "@${NOW}" +'%a %d %b %Y')\n\n## todo\n\n" > "${FILE_PATH}"
+			echo -e "# $(strftime '%a %d %b %Y' "$NOW")\n\n## todo\n\n" > "${FILE_PATH}"
 		fi
 
 		"${EDITOR}" "${EDITOR_OPTIONS[@]}" "${FILE_PATH}"