diff --git a/PSSQLite/Invoke-SqliteBulkCopy.ps1 b/PSSQLite/Invoke-SqliteBulkCopy.ps1
index 576fe88..4e3fcae 100644
--- a/PSSQLite/Invoke-SqliteBulkCopy.ps1
+++ b/PSSQLite/Invoke-SqliteBulkCopy.ps1
@@ -23,6 +23,9 @@
 .PARAMETER SQLiteConnection
     An existing SQLiteConnection to use.  We do not close this connection upon completed query.
 
+.PARAMETER ConnectionStringOptions
+    Optional string to append custom options to the SQLite connection string. For example, use 'DateTimeFormat=JulianDay' to enable Julian day date handling. Do not include a leading semicolon; it will be added automatically if needed.
+
 .PARAMETER ConflictClause
     The conflict clause to use in case a conflict occurs during insert. Valid values: Rollback, Abort, Fail, Ignore, Replace
 
@@ -107,15 +110,23 @@
         [string]
         $DataSource,
 
-        [Parameter( ParameterSetName = 'Connection',
-                    Position=1,
-                    Mandatory=$true,
-                    ValueFromPipeline=$false,
-                    ValueFromPipelineByPropertyName=$true,
-                    ValueFromRemainingArguments=$false )]
-        [Alias( 'Connection', 'Conn' )]
-        [System.Data.SQLite.SQLiteConnection]
-        $SQLiteConnection,
+    [Parameter( ParameterSetName = 'Connection',
+            Position=1,
+            Mandatory=$true,
+            ValueFromPipeline=$false,
+            ValueFromPipelineByPropertyName=$true,
+            ValueFromRemainingArguments=$false )]
+    [Alias( 'Connection', 'Conn' )]
+    [System.Data.SQLite.SQLiteConnection]
+    $SQLiteConnection,
+
+    [Parameter( ParameterSetName = 'Datasource',
+            Position=2,
+            Mandatory=$false,
+            ValueFromPipelineByPropertyName=$true,
+            ValueFromRemainingArguments=$false )]
+    [string]
+    $ConnectionStringOptions,
 
         [parameter( Position=2,
                     Mandatory = $true)]
@@ -234,6 +245,13 @@
             }
 
             $ConnectionString = "Data Source={0}" -f $Database
+            if ($ConnectionStringOptions) {
+                if ($ConnectionStringOptions.StartsWith(';')) {
+                    $ConnectionString += $ConnectionStringOptions
+                } else {
+                    $ConnectionString += ";$ConnectionStringOptions"
+                }
+            }
             $SQLiteConnection = New-Object System.Data.SQLite.SQLiteConnection -ArgumentList $ConnectionString
             $SQLiteConnection.ParseViaFramework = $true #Allow UNC paths, thanks to Ray Alex!
         }
diff --git a/PSSQLite/Invoke-SqliteQuery.ps1 b/PSSQLite/Invoke-SqliteQuery.ps1
index 90f61e1..c8b592f 100644
--- a/PSSQLite/Invoke-SqliteQuery.ps1
+++ b/PSSQLite/Invoke-SqliteQuery.ps1
@@ -43,6 +43,9 @@
     .PARAMETER AppendDataSource
         If specified, append the SQLite data source path to PSObject or DataRow output
 
+    .PARAMETER ConnectionStringOptions
+        Optional string to append custom options to the SQLite connection string. For example, use 'DateTimeFormat=JulianDay' to enable Julian day date handling.
+
     .INPUTS 
         DataSource 
             You can pipe DataSource paths to Invoke-SQLiteQuery.  The query will execute against each Data Source.
@@ -278,7 +281,10 @@
                     ValueFromRemainingArguments=$false )]
         [Alias( 'Connection', 'Conn' )]
         [System.Data.SQLite.SQLiteConnection]
-        $SQLiteConnection
+        $SQLiteConnection,
+        [Parameter(Position=8, Mandatory=$false)]
+        [string]
+        $ConnectionStringOptions
     ) 
 
     Begin
@@ -421,11 +427,19 @@
                 }
                 else
                 {
-                    Write-Verbose "Creating andn querying Data Source '$Database'"
+                    Write-Verbose "Creating and querying Data Source '$Database'"
                 }
 
                 $ConnectionString = "Data Source={0}" -f $Database
 
+                if ($ConnectionStringOptions) {
+                    if ($ConnectionStringOptions.StartsWith(';')) {
+                        $ConnectionString += $ConnectionStringOptions
+                    } else {
+                        $ConnectionString += ";$ConnectionStringOptions"
+                    }
+                }
+
                 $conn = New-Object System.Data.SQLite.SQLiteConnection -ArgumentList $ConnectionString
                 $conn.ParseViaFramework = $true #Allow UNC paths, thanks to Ray Alex!
                 Write-Debug "ConnectionString $ConnectionString"
diff --git a/PSSQLite/New-SqliteConnection.ps1 b/PSSQLite/New-SqliteConnection.ps1
index 9da0d9d..7d23567 100644
--- a/PSSQLite/New-SqliteConnection.ps1
+++ b/PSSQLite/New-SqliteConnection.ps1
@@ -18,6 +18,9 @@
     .PARAMETER ReadOnly
         If specified, open SQLite data source as read only
 
+    .PARAMETER ConnectionStringOptions
+        Optional string to append custom options to the SQLite connection string. For example, use 'DateTimeFormat=JulianDay' to enable Julian day date handling.
+
     .PARAMETER Open
         We open the connection by default.  You can use this parameter to create a connection without opening it.
 
@@ -83,12 +86,18 @@
         [Switch]
         $ReadOnly,
 
-        [Parameter( Position=4,
-                    Mandatory=$false,
-                    ValueFromPipelineByPropertyName=$true,
-                    ValueFromRemainingArguments=$false )]
-        [bool]
-        $Open = $True
+    [Parameter( Position=4,
+            Mandatory=$false,
+            ValueFromPipelineByPropertyName=$true,
+            ValueFromRemainingArguments=$false )]
+    [string]
+    $ConnectionStringOptions,
+    [Parameter( Position=5,
+            Mandatory=$false,
+            ValueFromPipelineByPropertyName=$true,
+            ValueFromRemainingArguments=$false )]
+    [bool]
+    $Open = $True
     )
     Process
     {
@@ -115,7 +124,14 @@
             {
                 $ConnectionString += "Read Only=True;"
             }
-        
+            if ($ConnectionStringOptions) {
+                if ($ConnectionStringOptions.StartsWith(';')) {
+                    $ConnectionString += $ConnectionStringOptions
+                } else {
+                    $ConnectionString += ";$ConnectionStringOptions"
+                }
+            }
+            
             $conn = New-Object System.Data.SQLite.SQLiteConnection -ArgumentList $ConnectionString
             $conn.ParseViaFramework = $true #Allow UNC paths, thanks to Ray Alex!
             Write-Debug "ConnectionString $ConnectionString"