GetOccurences not respecting different timezones in ICS file

[adamvaul]

Below is the ics file. If I use the following lines of code for just UTC timezone, then it does not return all the information for all the events.

Test Code
using System;
using System.Globalization;

public class Program
{
public static void Main()
{
Console.WriteLine("Hello World");

	var icsData = "BEGIN:VCALENDAR\nVERSION:2.0\nCALSCALE:GREGORIAN\nPRODID:bitcentralfuel/ics\nMETHOD:PUBLISH\nX-PUBLISHED-TTL:PT1H\nX-WR-TIMEZONE:America/Los_Angeles\nBEGIN:VTIMEZONE\nTZID:America/Los_Angeles\nX-LIC-LOCATION:America/Los_Angeles\nLAST-MODIFIED:20230103T195358Z\nBEGIN:DAYLIGHT\nTZNAME:PDT\nTZOFFSETFROM:-0800\nTZOFFSETTO:-0700\nDTSTART;TZID=\"America/Los_Angeles\":19700308T020000\nRRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU\nEND:DAYLIGHT\nBEGIN:STANDARD\nTZNAME:PST\nTZOFFSETFROM:-0700\nTZOFFSETTO:-0800\nDTSTART;TZID=\"America/Los_Angeles\":19701101T020000\nRRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU\nEND:STANDARD\nEND:VTIMEZONE\nBEGIN:VEVENT\nUID:e16adea0-0492-4823-be92-4457c3fc5560\nSUMMARY:1pm PST (1)\nDTSTAMP:20230314T192900Z\nDTSTART;TZID=America/Los_Angeles:20230314T130000\nDTEND;TZID=America/Los_Angeles:20230314T133000\nCATEGORIES:\nEND:VEVENT\nBEGIN:VEVENT\nUID:9315557b-353e-4bce-9a08-3531faf4bb14\nSUMMARY:3pm PST (5)\nDTSTAMP:20230314T192900Z\nDTSTART;TZID=America/Los_Angeles:20230314T150000\nDTEND;TZID=America/Los_Angeles:20230314T153000\nCATEGORIES:\nEND:VEVENT\nBEGIN:VEVENT\nUID:3d036279-5e19-421a-a8c2-3655b95d08b7\nSUMMARY:5pm PST (9)\nDTSTAMP:20230314T192900Z\nDTSTART;TZID=America/Los_Angeles:20230314T170000\nDTEND;TZID=America/Los_Angeles:20230314T173000\nCATEGORIES:\nEND:VEVENT\nEND:VCALENDAR\n";
	
	Ical.Net.Calendar calendar = Ical.Net.Calendar.Load(icsData);
	
	Console.WriteLine(calendar.ToString());
	
	
	var fromDate2 = new DateTime(2023, 3, 14, 20, 19, 0, DateTimeKind.Utc);
	var toDate2 = fromDate2.AddDays(14);

	var zFromDate = new Ical.Net.DataTypes.CalDateTime(fromDate2, "Etc/UTC");
	var zToDate = new Ical.Net.DataTypes.CalDateTime(toDate2, "Etc/UTC");

	var occ = calendar.GetOccurrences(zFromDate, zToDate);
	
	
	
	Console.WriteLine(occ.Count);
	
	
}

}

ICS File

BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:bitcentralfuel/ics
METHOD:PUBLISH
X-PUBLISHED-TTL:PT1H
X-WR-TIMEZONE:America/Los_Angeles
BEGIN:VTIMEZONE
TZID:America/Los_Angeles
X-LIC-LOCATION:America/Los_Angeles
LAST-MODIFIED:20230103T195358Z
BEGIN:DAYLIGHT
TZNAME:PDT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
DTSTART;TZID="America/Los_Angeles":19700308T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU
END:DAYLIGHT
BEGIN:STANDARD
TZNAME:PST
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
DTSTART;TZID="America/Los_Angeles":19701101T020000
RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:e16adea0-0492-4823-be92-4457c3fc5560
SUMMARY:1pm PST (1)
DTSTAMP:20230314T192900Z
DTSTART;TZID=America/Los_Angeles:20230314T130000
DTEND;TZID=America/Los_Angeles:20230314T133000
CATEGORIES:
END:VEVENT
BEGIN:VEVENT
UID:9315557b-353e-4bce-9a08-3531faf4bb14
SUMMARY:3pm PST (5)
DTSTAMP:20230314T192900Z
DTSTART;TZID=America/Los_Angeles:20230314T150000
DTEND;TZID=America/Los_Angeles:20230314T153000
CATEGORIES:
END:VEVENT
BEGIN:VEVENT
UID:3d036279-5e19-421a-a8c2-3655b95d08b7
SUMMARY:5pm PST (9)
DTSTAMP:20230314T192900Z
DTSTART;TZID=America/Los_Angeles:20230314T170000
DTEND;TZID=America/Los_Angeles:20230314T173000
CATEGORIES:
END:VEVENT
END:VCALENDAR

[minichma]

Might be a duplicate of or at least related to #406.