.Net TimezoneInfo.ConvertTime UTC date to Samoa incorrect value returned

var finalValue = TimeZoneInfo.ConvertTime(x, timeZoneInfo).ToString(format);[](https://i.stack.imgur.com/YgLPc.png)

When applying the ConvertTime method to my 'x' date which is in UTC to the Samoa Standard Time it's incorrectly applying +14 hours instead of the +13 hours that is showing on the BaseUtcOffset in the timeZoneInfo , my 'finalValue' var should match 03:14:39 and not 04:14:39, this method is working correctly for other timezones though

This indeed appears to be a bug, due to missing data in the Windows registry related to the 2021 change to DST rules in Samoa.

https://www.timeanddate.com/news/time/samoa-removes-dst.html

This was implemented in IANA 2021b, but it appears Microsoft missed it. It's not on the Microsoft DST blog.

A cleaner repoduction:

var dto1 = DateTimeOffset.Parse("2022-01-01T00:00:00Z");
Console.WriteLine(dto1.ToString("o"));

TimeZoneInfo tz = TimeZoneInfo.FindSystemTimeZoneById("Samoa Standard Time");
var dto2 = TimeZoneInfo.ConvertTime(dto1, tz);
Console.WriteLine(dto2.ToString("o"));

Output:

2022-01-01T00:00:00.0000000+00:00
2022-01-01T14:00:00.0000000+14:00

(The last one should be 2022-01-01T13:00:00.0000000+13:00.)

The relevant Windows Registry key is:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Samoa Standard Time\Dynamic DST which on my (fully updated Win 11 22H2) machine shows:

The 2012 entry is being applied for all years. There should have been a new entry for 2021 ending DST but not restarting it, and another entry for 2022 that doesn't have DST at all.

I'll report this to Microsoft. Thanks!