diff --git a/html/src/app.js b/html/src/app.js
index 47394f56..a4f925da 100644
--- a/html/src/app.js
+++ b/html/src/app.js
@@ -19076,9 +19076,11 @@ speechSynthesis.getVoices();
     };
 
     $app.data.dtHour12 = configRepository.getBool('VRCX_dtHour12');
+    $app.data.dtIsoFormat = configRepository.getBool('VRCX_dtIsoFormat');
     $app.methods.setDatetimeFormat = async function () {
         var currentCulture = await AppApi.CurrentCulture();
         var hour12 = configRepository.getBool('VRCX_dtHour12');
+        var isoFormat = configRepository.getBool('VRCX_dtIsoFormat');
         if (typeof this.dtHour12 !== 'undefined') {
             if (hour12 !== this.dtHour12) {
                 configRepository.setBool('VRCX_dtHour12', this.dtHour12);
@@ -19086,6 +19088,12 @@ speechSynthesis.getVoices();
             }
             var hour12 = this.dtHour12;
         }
+        if (typeof this.dtIsoFormat !== 'undefined') {
+            if (isoFormat !== this.dtIsoFormat) {
+                configRepository.setBool('VRCX_dtIsoFormat', this.dtIsoFormat);
+            }
+            var isoFormat = this.dtIsoFormat;
+        }
         var formatDate1 = function (date, format) {
             if (!date) {
                 return '-';
@@ -19116,6 +19124,30 @@ speechSynthesis.getVoices();
             }
             return '-';
         };
+        if (isoFormat) {
+            formatDate1 = function (date, format) {
+                if (!date) {
+                    return '-';
+                }
+                var dt = new Date(date);
+                if (format === 'long') {
+                    return dt.toISOString();
+                } else if (format === 'short') {
+                    return dt
+                        .toLocaleDateString('en-nz', {
+                            month: '2-digit',
+                            day: '2-digit',
+                            hour: 'numeric',
+                            minute: 'numeric',
+                            hourCycle: hour12 ? 'h12' : 'h23'
+                        })
+                        .replace(' AM', 'am')
+                        .replace(' PM', 'pm')
+                        .replace(',', '');
+                }
+                return '-';
+            };
+        }
         Vue.filter('formatDate', formatDate1);
     };
     $app.methods.setDatetimeFormat();
diff --git a/html/src/index.pug b/html/src/index.pug
index b1663ba3..c414fec6 100644
--- a/html/src/index.pug
+++ b/html/src/index.pug
@@ -1184,6 +1184,9 @@ html
                                 div.options-container-item
                                     span.name Time Format
                                     el-switch(v-model="dtHour12" @change="setDatetimeFormat" inactive-text="24 Hour" active-text="12 Hour")
+                                div.options-container-item
+                                    span.name Force ISO date format
+                                    el-switch(v-model="dtIsoFormat" @change="setDatetimeFormat")
                                 div.options-container
                                     span.sub-header Automatically Manage Cache When Closing VRChat
                                     div.options-container-item