diff --git a/src/posts/0014-change-emacs-theme-automatically/index.org b/src/posts/0014-change-emacs-theme-automatically/index.org
index 8f44761..e6291c7 100644
--- a/src/posts/0014-change-emacs-theme-automatically/index.org
+++ b/src/posts/0014-change-emacs-theme-automatically/index.org
@@ -13,4 +13,30 @@ One would be to sync with the sun using the current location.
 There is an emacs package for that.
 It's called [[https://github.com/hadronzoo/theme-changer][theme-changer]] which at the timme of writing those lines is
 asking for a new maintainer.
-This theme changer is very elegant because like macOS use the coordinate
+This theme changer is very elegant because like macOS use the location to
+determine if it is day or night.
+But I wanted to have more themes from morning to night:
+
+1. early morning: deep yellow (gruvbox-light),
+2. morning: light yellow (solarized-light),
+3. day: grey/blueish during the day (nord-light),
+4. evening: then back to yellow during
+5. night: dark theme (oceanic-next)
+
+#+BEGIN_SRC elisp
+(defun y/update-theme ()
+  "depending on time use different theme"
+  ;; very early => gruvbox-light, solarized-light, nord-light
+  (let* ((hour (nth 2 (decode-time (current-time))))
+         (theme (cond ((<= 7 hour 8)   'doom-gruvbox-light)
+                      ((= 9 hour)      'doom-solarized-light)
+                      ((<= 10 hour 16) 'doom-nord-light)
+                      ((<= 17 hour 18) 'doom-gruvbox-light)
+                      ((<= 19 hour 22) 'doom-oceanic-next)
+                      (t               'doom-laserwave))))
+    (when (not (equal doom-theme theme))
+      (setq doom-theme theme)
+      (load-theme doom-theme))))
+
+(y/update-theme)
+#+END_SRC