TimeZoneInfo doesn't find time zones on Unity

Why TimeZoneInfo (found in system namespace) doesn't find time zones on Unity? Doesn't mono support it? I'm using Windows.
The following code prints only 0:

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using System;
4. using System.Collections.ObjectModel;
5. public class Timezones : MonoBehaviour {
6.  
7.     // Use this for initialization
8.     void Start () {
9.         Debug.Log(TimeZoneInfo.GetSystemTimeZones().Count);
10.         foreach (TimeZoneInfo z in TimeZoneInfo.GetSystemTimeZones())
11.             Debug.Log(z.Id);
12.         ReadOnlyCollection<TimeZoneInfo> tzCollection;
13.         tzCollection = TimeZoneInfo.GetSystemTimeZones();
14.         foreach (TimeZoneInfo timeZone in tzCollection){
15.             print(timeZone.Id+":"+ timeZone.DisplayName);
16.         }
17.     }
18.  
19. }

 

http://docs.unity3d.com/410/Documentation/ScriptReference/MonoCompatibility.html

https://msdn.microsoft.com/en-us/library/system.timezone.currenttimezone(v=vs.110).aspx

might work

 

I couldn't find timeZoneInfo class from mono compatibility page, so I guess it's not compatible with Unity. I don't need local currenttimezone, i need to get any timezone from TimeZoneInfo.