diff --git a/test/image/mocks/axes_breaks.json b/test/image/mocks/axes_breaks.json
index 8c0c7581ac2..3857c4f19d7 100644
--- a/test/image/mocks/axes_breaks.json
+++ b/test/image/mocks/axes_breaks.json
@@ -74,8 +74,8 @@
     "shapes": [
       {
         "type": "rect",
-        "y0": 11,
-        "y1": 89,
+        "y0": "1970-01-01 00:00:00.011",
+        "y1": "1970-01-01 00:00:00.089",
         "yref": "y2",
         "x0": 0.56,
         "x1": 1,
@@ -83,8 +83,8 @@
       },
       {
         "type": "rect",
-        "y0": 101,
-        "y1": 189,
+        "y0": "1970-01-01 00:00:00.101",
+        "y1": "1970-01-01 00:00:00.189",
         "yref": "y2",
         "x0": 0.56,
         "x1": 1,
@@ -92,8 +92,8 @@
       },
       {
         "type": "rect",
-        "x0": 11,
-        "x1": 89,
+        "x0": "1970-01-01 00:00:00.011",
+        "x1": "1970-01-01 00:00:00.089",
         "xref": "x4",
         "y0": 0,
         "y1": 0.5,
@@ -101,8 +101,8 @@
       },
       {
         "type": "rect",
-        "x0": 101,
-        "x1": 189,
+        "x0": "1970-01-01 00:00:00.101",
+        "x1": "1970-01-01 00:00:00.189",
         "xref": "x4",
         "y0": 0,
         "y1": 0.5,
diff --git a/test/image/mocks/domain_ref_axis_types.json b/test/image/mocks/domain_ref_axis_types.json
index d9159f72311..62a6b094467 100644
--- a/test/image/mocks/domain_ref_axis_types.json
+++ b/test/image/mocks/domain_ref_axis_types.json
@@ -16,7 +16,7 @@
     },
     {
       "type": "bar",
-      "x": [0, 86400000, 172800000, 259200000],
+      "x": ["1970-01-01", "1970-01-02", "1970-01-03", "1970-01-04"],
       "xaxis": "x3",
       "y": [3, 1, 6, 10],
       "yaxis": "y3"
@@ -56,7 +56,7 @@
       "type": "bar",
       "x": [3, 1, 6, 10],
       "xaxis": "x8",
-      "y": [0, 86400000, 172800000, 259200000],
+      "y": ["1970-01-01", "1970-01-02", "1970-01-03", "1970-01-04"],
       "yaxis": "y8"
     },
     {
@@ -237,8 +237,8 @@
       },
       {
         "type": "line",
-        "x0": 172800000,
-        "x1": 172800000,
+        "x0": "1970-01-03",
+        "x1": "1970-01-03",
         "xref": "x3",
         "y0": 0,
         "y1": 1,
@@ -246,8 +246,8 @@
       },
       {
         "type": "line",
-        "x0": 259200000,
-        "x1": 259200000,
+        "x0": "1970-01-04",
+        "x1": "1970-01-04",
         "xref": "x3",
         "y0": 0,
         "y1": 1,
@@ -264,8 +264,8 @@
       },
       {
         "type": "rect",
-        "x0": 0,
-        "x1": 86400000,
+        "x0": "1970-01-01",
+        "x1": "1970-01-02",
         "xref": "x3",
         "y0": 0,
         "y1": 1,
@@ -465,8 +465,8 @@
         "x0": 0,
         "x1": 1,
         "xref": "x8 domain",
-        "y0": 172800000,
-        "y1": 172800000,
+        "y0": "1970-01-03",
+        "y1": "1970-01-03",
         "yref": "y8"
       },
       {
@@ -474,8 +474,8 @@
         "x0": 0,
         "x1": 1,
         "xref": "x8 domain",
-        "y0": 259200000,
-        "y1": 259200000,
+        "y0": "1970-01-04",
+        "y1": "1970-01-04",
         "yref": "y8"
       },
       {
@@ -492,8 +492,8 @@
         "x0": 0,
         "x1": 1,
         "xref": "x8 domain",
-        "y0": 0,
-        "y1": 86400000,
+        "y0": "1970-01-01",
+        "y1": "1970-01-02",
         "yref": "y8"
       },
       {
diff --git a/test/image/mocks/ohlc_first.json b/test/image/mocks/ohlc_first.json
index 6ee7b53e201..9cb2d2a596e 100644
--- a/test/image/mocks/ohlc_first.json
+++ b/test/image/mocks/ohlc_first.json
@@ -962,7 +962,7 @@
   ],
   "layout": {
     "xaxis": {
-      "range": [1472577187875, 1475225280000]
+      "range": ["2016-08-30 17:13:07.875", "2016-09-30 08:48"]
     },
     "yaxis": {
       "tickprefix": "$",
diff --git a/test/image/mocks/range_selector_style.json b/test/image/mocks/range_selector_style.json
index 790610c4a3c..46af81f120d 100644
--- a/test/image/mocks/range_selector_style.json
+++ b/test/image/mocks/range_selector_style.json
@@ -808,7 +808,7 @@
       },
       "domain": [0.52, 1],
       "type": "date",
-      "range": [-694292400000, 1444622400000],
+      "range": ["1948-01-01 05:00", "2015-10-12 04:00"],
       "autorange": true
     },
     "yaxis": {
@@ -844,7 +844,7 @@
           "family": "Raleway, sans-serif"
         }
       },
-      "range": [1420088400000, 1444622400000],
+      "range": ["2015-01-01 05:00", "2015-10-12 04:00"],
       "type": "date"
     },
     "yaxis2": {