diff --git a/conservancy/podjango/templatetags/date_within.py b/conservancy/podjango/templatetags/date_within.py
new file mode 100644
index 0000000000000000000000000000000000000000..207bca71c7f74095ea29581ad2809219711ee6cf
--- /dev/null
+++ b/conservancy/podjango/templatetags/date_within.py
@@ -0,0 +1,10 @@
+from datetime import datetime, timedelta
+
+from django import template
+
+register = template.Library()
+
+@register.filter
+def date_within_past_days(value, arg):
+    # question: does datetime.now() do a syscall each time is it called?
+    return value > (datetime.now() - timedelta(days=int(arg)))