diff --git a/models/acc_operation.py b/models/acc_operation.py
index 85cd7ec75323270a42a0f222f31fc88f60beb6bc..3b85b8603ef2c3849006054efa96f5a905677325 100644
--- a/models/acc_operation.py
+++ b/models/acc_operation.py
@@ -705,6 +705,7 @@ class AccOperation(models.Model):
                             "type": "time",
                             "time": {
                                 "unit": scale,
+                                "displayFormats": {"quarter": "D MMM"},
                             },
                             "gridLines": {"offsetGridLines": offsetGridLines},
                         }
@@ -796,7 +797,10 @@ class AccOperation(models.Model):
                     "xAxes": [
                         {
                             "type": "time",
-                            "time": {"unit": scale},
+                            "time": {
+                                "unit": scale,
+                                "displayFormats": {"quarter": "D MMM"},
+                            },
                             "stacked": True,
                             "offset": True,
                             "gridLines": {"offsetGridLines": True},
@@ -933,6 +937,7 @@ class AccOperation(models.Model):
                             "type": "time",
                             "time": {
                                 "unit": scale,
+                                "displayFormats": {"quarter": "D MMM"},
                             },
                             "ticks": {
                                 # 'min': result.date_start,
@@ -1081,7 +1086,10 @@ class AccOperation(models.Model):
                     "xAxes": [
                         {
                             "type": "time",
-                            "time": {"unit": scale},
+                            "time": {
+                                "unit": scale,
+                                "displayFormats": {"quarter": "D MMM"},
+                            },
                             "stacked": True,
                             "offset": True,
                             "gridLines": {"offsetGridLines": True},