diff --git a/src/NSwag.CodeGeneration.TypeScript/Models/TypeScriptParameterModel.cs b/src/NSwag.CodeGeneration.TypeScript/Models/TypeScriptParameterModel.cs
index fdf8bee2db..4df9edd217 100644
--- a/src/NSwag.CodeGeneration.TypeScript/Models/TypeScriptParameterModel.cs
+++ b/src/NSwag.CodeGeneration.TypeScript/Models/TypeScriptParameterModel.cs
@@ -6,8 +6,11 @@
 // <author>Rico Suter, mail@rsuter.com</author>
 //-----------------------------------------------------------------------
 
+using System;
 using System.Collections.Generic;
+using NJsonSchema;
 using NJsonSchema.CodeGeneration;
+using NJsonSchema.CodeGeneration.TypeScript;
 using NSwag.CodeGeneration.Models;
 
 namespace NSwag.CodeGeneration.TypeScript.Models
@@ -16,6 +19,7 @@ namespace NSwag.CodeGeneration.TypeScript.Models
     public class TypeScriptParameterModel : ParameterModelBase
     {
         private readonly TypeScriptClientGeneratorSettings _settings;
+        private readonly JsonSchema _schema;
 
         /// <summary>Initializes a new instance of the <see cref="TypeScriptParameterModel" /> class.</summary>
         /// <param name="parameterName">Name of the parameter.</param>
@@ -38,6 +42,7 @@ public TypeScriptParameterModel(
             : base(parameterName, variableName, typeName, parameter, allParameters, settings.TypeScriptGeneratorSettings, generator, typeResolver)
         {
             _settings = settings;
+            _schema = parameter.Schema;
         }
 
         /// <summary>Gets the type postfix (e.g. ' | null | undefined')</summary>
@@ -55,5 +60,51 @@ public string TypePostfix
                 }
             }
         }
+
+        /// <summary>
+        /// Format the datetime to a string based on the chosen datetime type setting
+        /// </summary>
+        public string GetDateTimeToString
+        {
+            get
+            {
+                switch (_settings.TypeScriptGeneratorSettings.DateTimeType)
+                {
+                    case TypeScriptDateTimeType.Date:
+                        return "toISOString()";
+
+                    case TypeScriptDateTimeType.MomentJS:
+                    case TypeScriptDateTimeType.OffsetMomentJS:
+                        if (_schema.Format == JsonFormatStrings.TimeSpan)
+                        {
+                            return "format('d.hh:mm:ss.SS', { trim: false })";
+                        }
+
+                        if (_settings.TypeScriptGeneratorSettings.DateTimeType == TypeScriptDateTimeType.OffsetMomentJS)
+                        {
+                            return "toISOString(true)";
+                        }
+                        return "toISOString()";
+
+                    case TypeScriptDateTimeType.String:
+                        return "";
+
+                    case TypeScriptDateTimeType.Luxon:
+                        return "toString()";
+
+                    case TypeScriptDateTimeType.DayJS:
+                        if (_schema.Format == JsonFormatStrings.TimeSpan)
+                        {
+                            return "format('d.hh:mm:ss.SSS')";
+                        }
+
+                        return "toISOString()";
+
+                    default:
+                        throw new ArgumentOutOfRangeException();
+                }
+            }
+        }
+
     }
 }
diff --git a/src/NSwag.CodeGeneration.TypeScript/Templates/Client.RequestUrl.liquid b/src/NSwag.CodeGeneration.TypeScript/Templates/Client.RequestUrl.liquid
index 984c2f52ca..7fbe7135b8 100644
--- a/src/NSwag.CodeGeneration.TypeScript/Templates/Client.RequestUrl.liquid
+++ b/src/NSwag.CodeGeneration.TypeScript/Templates/Client.RequestUrl.liquid
@@ -7,9 +7,9 @@ if ({{ parameter.VariableName }} === undefined || {{ parameter.VariableName }} =
 if ({{ parameter.VariableName }} !== null && {{ parameter.VariableName }} !== undefined)
 {%     endif -%}
 {%     if parameter.IsDateOrDateTimeArray -%}
-url_ = url_.replace("{{ "{" }}{{ parameter.Name }}}", encodeURIComponent({{ parameter.VariableName }}.map(s_ => s_ ? s_.toJSON() : "null").join()));
+url_ = url_.replace("{{ "{" }}{{ parameter.Name }}}", encodeURIComponent({{ parameter.VariableName }}.map(s_ => s_ ? s_.{{ parameter.GetDateTimeToString }} : "null").join()));
 {%     elseif parameter.IsDateOrDateTime -%}
-url_ = url_.replace("{{ "{" }}{{ parameter.Name }}}", encodeURIComponent({{ parameter.VariableName }} ? "" + {{ parameter.VariableName }}.toJSON() : "null"));
+url_ = url_.replace("{{ "{" }}{{ parameter.Name }}}", encodeURIComponent({{ parameter.VariableName }} ? "" + {{ parameter.VariableName }}.{{ parameter.GetDateTimeToString }} : "null"));
 {%     elseif parameter.IsArray -%}
 url_ = url_.replace("{{ "{" }}{{ parameter.Name }}}", encodeURIComponent({{ parameter.VariableName }}.join()));
 {%     else -%}
@@ -50,7 +50,7 @@ else if ({{ parameter.VariableName }} !== undefined)
 			}
     });
 {%     elseif parameter.IsDateOrDateTime -%}
-    url_ += "{{ parameter.Name }}=" + encodeURIComponent({{ parameter.VariableName }} ? "" + {{ parameter.VariableName }}.toJSON() : "{{ QueryNullValue }}") + "&";
+    url_ += "{{ parameter.Name }}=" + encodeURIComponent({{ parameter.VariableName }} ? "" + {{ parameter.VariableName }}.{{ parameter.GetDateTimeToString }} : "{{ QueryNullValue }}") + "&";
 {%     elseif parameter.IsArray -%}
     {{ parameter.VariableName }} && {{ parameter.VariableName }}.forEach(item => { url_ += "{{ parameter.Name }}=" + encodeURIComponent("" + item) + "&"; });
 {%     else -%}