Finally fix timezone awareness of dates hopefully

app/blueprints/job_status/test/test_job_status_requests.py

@@ -3,6 +3,7 @@ Tests for the status namespace
 """
 import json
 import unittest
+import datetime
 
 from app import create_app
 from app.authorisation import token_generator
@@ -56,7 +57,7 @@ class TestStatus(unittest.TestCase):
                 raw_value = getattr(job_must_be, prop)
                 value_must_be = raw_value
                 if raw_value is not None:
-                    value_must_be = raw_value.astimezone().isoformat()
+                    value_must_be = raw_value.replace(tzinfo=datetime.timezone.utc).isoformat()
                 value_got = resp_data[prop]
                 self.assertEqual(value_must_be, value_got, msg=f'The returned job {prop} is not correct.')
 

app/models/delayed_job_models.py

@@ -112,8 +112,7 @@ def standardise_public_date(public_time):
     if public_time is None:
         return None
 
-    public_time.replace(tzinfo=datetime.timezone.utc)
-    return public_time.astimezone().isoformat()
+    return public_time.replace(tzinfo=datetime.timezone.utc).isoformat()
 
 
 class DelayedJob(DB.Model):