diff --git a/container-compose.yml b/container-compose.yml
index a6cee3c8..bbc50556 100644
--- a/container-compose.yml
+++ b/container-compose.yml
@@ -183,6 +183,8 @@ services:
         - journal_source=./journal
         - mailman_source=./mailman
         - orbit_source=./orbit
+    environment:
+      TZ: ${SINGULARITY_TIMEZONE}
     volumes:
       - type: volume
         source: denis-db
diff --git a/denis/Containerfile b/denis/Containerfile
index f87db507..8808eb91 100644
--- a/denis/Containerfile
+++ b/denis/Containerfile
@@ -22,6 +22,7 @@ FROM alpine:3.20 AS denis
 RUN apk add \
 	py3-peewee \
 	py3-gitpython \
+	tzdata \
 	;
 
 WORKDIR /usr/local/share/denis
diff --git a/denis/configure.py b/denis/configure.py
index 1bef66f4..c18060d9 100755
--- a/denis/configure.py
+++ b/denis/configure.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 
+from datetime import datetime
 from argparse import ArgumentParser as ap
 
 import db
@@ -48,7 +49,12 @@ def add_final(parser, required=True):
     remove_parser = command_parsers.add_parser('remove')
     add_assignment(remove_parser)
 
-    command_parsers.add_parser('dump')
+    dump_parser = command_parsers.add_parser('dump')
+    dump_parser.add_argument('-i', '--iso',
+                             action='store_true',
+                             dest='fmt_iso',
+                             help='Dump dates in ISO format')
+
     command_parsers.add_parser('reload')
 
     # Dictionary containing the desired command and all flags with their values
@@ -96,13 +102,17 @@ def remove(assignment):
         print(f'no such assignment {assignment}')
 
 
-def dump():
+def dump(fmt_iso):
+    def timestamp_to_formatted(timestamp):
+        dt = datetime.fromtimestamp(timestamp).astimezone()
+        return dt.isoformat() if fmt_iso else dt.strftime('%a %b %d %Y %T %Z (%z)')
+
     print(' --- Assignments ---')
     for asn in db.Assignment.select():
         print(f'''{asn.name}:
-\tInitial: {asn.initial_due_date}
-\tPeer Review: {asn.peer_review_due_date}
-\tFinal: {asn.final_due_date}''')
+\tInitial:\t{timestamp_to_formatted(asn.initial_due_date)}
+\tPeer Review:\t{timestamp_to_formatted(asn.peer_review_due_date)}
+\tFinal:\t\t{timestamp_to_formatted(asn.final_due_date)}''')
 
 
 def reload():