diff --git a/src/FSharpPlus/Control/Converter.fs b/src/FSharpPlus/Control/Converter.fs
index 5cf8fa41c..f0d88dae8 100644
--- a/src/FSharpPlus/Control/Converter.fs
+++ b/src/FSharpPlus/Control/Converter.fs
@@ -164,7 +164,7 @@ type Parse =
     static member Parse (_: DateTime      , _: Parse) = fun (x:string) ->
         match DateTime.TryParseExact (x, [|"yyyy-MM-ddTHH:mm:ss.fffZ"; "yyyy-MM-ddTHH:mm:ssZ"|], null, DateTimeStyles.RoundtripKind) with
         | true, x -> x
-        | _ -> DateTime.Parse (x, CultureInfo.InvariantCulture)
+        | _ -> DateTime.Parse (x, CultureInfo.InvariantCulture, DateTimeStyles.AdjustToUniversal)
 
     static member Parse (_: DateTimeOffset, _: Parse) = fun (x:string) ->
         try DateTimeOffset.ParseExact (x, [|"yyyy-MM-ddTHH:mm:ss.fffK"; "yyyy-MM-ddTHH:mm:ssK"|], null, DateTimeStyles.AssumeUniversal)
diff --git a/src/FSharpPlus/Extensions/IList.fs b/src/FSharpPlus/Extensions/IList.fs
index f05ba64f5..641e1e74c 100644
--- a/src/FSharpPlus/Extensions/IList.fs
+++ b/src/FSharpPlus/Extensions/IList.fs
@@ -1,6 +1,5 @@
 namespace FSharpPlus
 
-#if !FABLE_COMPILER
 
 /// Additional operations IList<'T>
 [<RequireQualifiedAccess>]
@@ -9,9 +8,17 @@ module IList =
     open System.Collections.ObjectModel
     open System.Collections.Generic
 
+#if !FABLE_COMPILER
     /// <summary>Converts an IList to an IReadOnlyList (from System.Collections.Generic).</summary>
     /// <param name="source">The System.Collections.Generic.IList</param>
     /// <returns>The list converted to a System.Collections.Generic.IReadOnlyList</returns>
     let toIReadOnlyList (source: IList<_>) = ReadOnlyCollection source :> IReadOnlyList<_>
 
 #endif
+
+    let ofArray (source: 'T[]   ) = source                 :> IList<'T>
+    let ofList  (source: 'T list) = source |> Array.ofList :> IList<'T>
+    let ofSeq   (source: seq<'T>) = source |> Array.ofSeq  :> IList<'T>
+    let map  mapping (source: IList<'T>) = Seq.map  mapping source |> Seq.toArray :> IList<'U>
+    let iter mapping (source: IList<'T>) = Seq.iter mapping source
+
diff --git a/src/FSharpPlus/Extensions/IReadOnlyList.fs b/src/FSharpPlus/Extensions/IReadOnlyList.fs
index b0910bf58..e4ad6c2c2 100644
--- a/src/FSharpPlus/Extensions/IReadOnlyList.fs
+++ b/src/FSharpPlus/Extensions/IReadOnlyList.fs
@@ -8,7 +8,11 @@ module IReadOnlyList =
     #if !FABLE_COMPILER
     
     let ofArray (source: 'T array) = IList.toIReadOnlyList source
+    let ofList (source: 'T list) = source |> Array.ofList |> IList.toIReadOnlyList
+    let ofSeq  (source: seq<'T>) = source |> Array.ofSeq  |> IList.toIReadOnlyList
+
     #endif
+
     let toArray (source: IReadOnlyList<'T>) = Array.ofSeq source
 
     #if !FABLE_COMPILER
@@ -19,8 +23,13 @@ module IReadOnlyList =
         if 0 <= i && i < source.Count then
             source |> Array.ofSeq |> setNth i value |> ofArray |> Some
         else None
+    
+    let map mapping (source: IReadOnlyList<'T>) : IReadOnlyList<'U> = Seq.map mapping source |> Seq.toArray |> IList.toIReadOnlyList
+    
     #endif
 
     let tryItem i (source: IReadOnlyList<_>) =
         if 0 <= i && i < source.Count then Some source.[i]
-        else None
\ No newline at end of file
+        else None
+
+    let iter mapping (source: IReadOnlyList<'T>) = Seq.iter mapping source
\ No newline at end of file
diff --git a/src/FSharpPlus/Operators.fs b/src/FSharpPlus/Operators.fs
index 0501efa6a..dc5b296af 100644
--- a/src/FSharpPlus/Operators.fs
+++ b/src/FSharpPlus/Operators.fs
@@ -185,7 +185,6 @@ module Operators =
     let inline lift2 (f: 'T->'U->'V) (x: '``Applicative<'T>``) (y: '``Applicative<'U>``) : '``Applicative<'V>`` = Lift2.Invoke f x y
 
     [<System.Obsolete("Use lift2 instead.")>]
-    /// <category index="2">Applicative</category>
     let inline liftA2 (f: 'T->'U->'V) (x: '``Applicative<'T>``) (y: '``Applicative<'U>``) : '``Applicative<'V>`` = lift2 f x y
 
     /// <summary>
@@ -207,11 +206,9 @@ module Operators =
     let inline (<*  ) (x: '``Applicative<'U>``) (y: '``Applicative<'T>``) : '``Applicative<'U>`` = ((fun (k: 'U) (_: 'T) -> k ) <!> x : '``Applicative<'T->'U>``) <*> y
 
     [<System.Obsolete("Use flip (<*>) instead.")>]
-    /// <category index="2">Applicative</category>
     let inline (<**>) (x: '``Applicative<'T>``) : '``Applicative<'T -> 'U>``->'``Applicative<'U>`` = flip (<*>) x
     
     [<System.Obsolete("Use opt instead.")>]
-    /// <category index="2">Applicative</category>
     let inline optional v = Some <!> v </Append.Invoke/> result None
 
     /// <summary>