parsing ics file - recurring events timezone issue - bash

Question

This is a basic.ics file containing a recurring event and a non-recurring event
BEGIN:VCALENDAR
PRODID:-//Google Inc//Google Calendar 70.9054//EN
VERSION:2.0
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:GreekMan
X-WR-TIMEZONE:Asia/Nicosia
BEGIN:VTIMEZONE
TZID:Europe/Moscow
X-LIC-LOCATION:Europe/Moscow
BEGIN:STANDARD
TZOFFSETFROM:+0300
TZOFFSETTO:+0300
TZNAME:MSK
DTSTART:19700101T000000
END:STANDARD
END:VTIMEZONE
BEGIN:VTIMEZONE
TZID:Asia/Nicosia
X-LIC-LOCATION:Asia/Nicosia
BEGIN:STANDARD
TZOFFSETFROM:+0300
TZOFFSETTO:+0200
TZNAME:EET
DTSTART:19701025T040000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0200
TZOFFSETTO:+0300
TZNAME:EEST
DTSTART:19700329T030000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
DTSTART:20221110T140000Z
DTEND:20221110T143000Z
DTSTAMP:20221110T093950Z
UID:52kaiifeon2cdil0m6ln6m4cf6#google.com
CREATED:20221110T091122Z
LAST-MODIFIED:20221110T091122Z
LOCATION:
SEQUENCE:0
STATUS:CONFIRMED
SUMMARY:non recurring event 1600
TRANSP:OPAQUE
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Nicosia:20221110T130000
DTEND;TZID=Asia/Nicosia:20221110T133000
RRULE:FREQ=WEEKLY;BYDAY=TH
DTSTAMP:20221110T093950Z
UID:4ponmapnn5o6bj0fep6kfplcf4#google.com
CREATED:20221110T091051Z
DESCRIPTION:
LAST-MODIFIED:20221110T091101Z
LOCATION:
SEQUENCE:1
STATUS:CONFIRMED
SUMMARY:recurring event 1300
TRANSP:OPAQUE
END:VEVENT
END:VCALENDAR
I download this file with wget and convert it to a table using this command
awk 'BEGIN{FS=":"}/^DTSTART/{dtstart=$2}/^SUMMARY/{summary=$2}/^END:VEVENT/{print substr(dtstart,7,2)"/"substr(dtstart,5,2)"/"substr(dtstart,1,4),sprintf("%02d",substr(dtstart,10,2)'+2')":"substr(dtstart,12,2),summary}' basic.ics
This is the output. As you can see the recurring event is showing the wrong time.
10/11/2022 16:00 non recurring event 1600
10/11/2022 15:00 recurring event 1300
google calendar shows the time in UTC+0, so as you can see in the above command I add 2 hours to each event to make it UTC+2.
The problem is that recurring events include the timezone on DTSTART, so those events don't have to be corrected.
How can I modify the command to avoid adding 2 hours to recurring events?