From 7e573c70a3aa0aeb7992de1bab9823d26b458c3e Mon Sep 17 00:00:00 2001
From: miguelcrpinto <miguelcrpinto@outlook.com>
Date: Sat, 17 Jun 2023 10:28:53 +0200
Subject: [PATCH] Updated the IsoDateTimeConverter initialization in the
 JsonDateTimeFormatAttribute to set the Culture to InvariantCulture so that
 the custom DateTime format symbols ( date and time separators) are respected
 independent of the CurrentCulture being used.

---
 src/Umbraco.Web.Common/Filters/JsonDateTimeFormatAttribute.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Umbraco.Web.Common/Filters/JsonDateTimeFormatAttribute.cs b/src/Umbraco.Web.Common/Filters/JsonDateTimeFormatAttribute.cs
index 247a2a09ba7a..0e0cf5587dbf 100644
--- a/src/Umbraco.Web.Common/Filters/JsonDateTimeFormatAttribute.cs
+++ b/src/Umbraco.Web.Common/Filters/JsonDateTimeFormatAttribute.cs
@@ -1,4 +1,5 @@
 using System.Buffers;
+using System.Globalization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.Filters;
 using Microsoft.Extensions.Options;
@@ -42,7 +43,7 @@ public void OnResultExecuting(ResultExecutingContext context)
             {
                 var serializerSettings = new JsonSerializerSettings();
                 serializerSettings.Converters.Add(
-                    new IsoDateTimeConverter { DateTimeFormat = _format });
+                    new IsoDateTimeConverter { DateTimeFormat = _format, Culture = CultureInfo.InvariantCulture });
                 objectResult.Formatters.Clear();
                 objectResult.Formatters.Add(
                     new AngularJsonMediaTypeFormatter(serializerSettings, _arrayPool, _options));