diff --git a/lemoncurry/jinja2/ago.py b/lemoncurry/jinja2/ago.py
index 0bc6914..9da1a1d 100644
--- a/lemoncurry/jinja2/ago.py
+++ b/lemoncurry/jinja2/ago.py
@@ -3,4 +3,7 @@ from datetime import datetime
 
 
 def ago(dt: datetime) -> str:
+    # We have to convert the datetime we get to local time first, because ago
+    # just strips the timezone from a timezone-aware datetime.
+    dt = dt.astimezone()
     return human(dt, past_tense='{}', abbreviate=True)