diff --git a/docs/data/calendar.ics b/docs/data/calendar.ics
index f40343298ee979e5c308406956fc64e37a95bda1..70254e5376492d5d573dd57c96b0841536183eb4 100644
--- a/docs/data/calendar.ics
+++ b/docs/data/calendar.ics
@@ -28,7 +28,7 @@ DTSTART;TZID=W. Europe Standard Time:20230718T100000
 DTEND;TZID=W. Europe Standard Time:20230718T160000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:2
@@ -53,7 +53,7 @@ DTSTART;TZID=W. Europe Standard Time:20230718T103000
 DTEND;TZID=W. Europe Standard Time:20230718T111500
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:TRANSPARENT
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -77,7 +77,7 @@ DTSTART;TZID=W. Europe Standard Time:20230727T103000
 DTEND;TZID=W. Europe Standard Time:20230727T111500
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:TRANSPARENT
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -100,7 +100,7 @@ DTSTART;TZID=W. Europe Standard Time:20230808T123000
 DTEND;TZID=W. Europe Standard Time:20230808T143000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -121,7 +121,7 @@ DTSTART;VALUE=DATE:20230810
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
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 STATUS:CONFIRMED
 SEQUENCE:0
@@ -144,7 +144,7 @@ DTSTART;TZID=W. Europe Standard Time:20230810T140000
 DTEND;TZID=W. Europe Standard Time:20230810T200000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:3
@@ -168,7 +168,7 @@ DTSTART;TZID=W. Europe Standard Time:20230810T143000
 DTEND;TZID=W. Europe Standard Time:20230810T151500
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:TRANSPARENT
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -191,7 +191,7 @@ DTSTART;TZID=W. Europe Standard Time:20230815T113000
 DTEND;TZID=W. Europe Standard Time:20230815T130000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:TRANSPARENT
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -214,7 +214,7 @@ DTSTART;TZID=W. Europe Standard Time:20230815T130000
 DTEND;TZID=W. Europe Standard Time:20230815T150000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:TRANSPARENT
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 SEQUENCE:0
@@ -240,7 +240,7 @@ DTSTART;TZID=W. Europe Standard Time:20230829T100000
 DTEND;TZID=W. Europe Standard Time:20230829T160000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
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 TRANSP:OPAQUE
 STATUS:CONFIRMED
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@@ -264,7 +264,7 @@ DTSTART;TZID=W. Europe Standard Time:20230829T100000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -291,7 +291,7 @@ DTSTART;TZID=W. Europe Standard Time:20230831T100000
 DTEND;TZID=W. Europe Standard Time:20230831T160000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -315,7 +315,7 @@ DTSTART;TZID=W. Europe Standard Time:20230905T100000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -338,7 +338,7 @@ DTSTART;TZID=W. Europe Standard Time:20230905T123000
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 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -362,7 +362,7 @@ DTSTART;TZID=W. Europe Standard Time:20230912T100000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -390,7 +390,7 @@ DTSTART;TZID=W. Europe Standard Time:20230914T113000
 DTEND;TZID=W. Europe Standard Time:20230914T140000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -416,7 +416,7 @@ DTSTART;TZID=W. Europe Standard Time:20230914T170000
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 PRIORITY:5
-DTSTAMP:20231015T180344Z
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 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:3
@@ -437,7 +437,7 @@ DTSTART;TZID=W. Europe Standard Time:20230914T173000
 DTEND;TZID=W. Europe Standard Time:20230914T190000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
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@@ -457,7 +457,7 @@ DTSTART;VALUE=DATE:20230919
 DTEND;VALUE=DATE:20230927
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-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
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@@ -483,7 +483,7 @@ DTSTART;TZID=W. Europe Standard Time:20230919T113000
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 CLASS:PUBLIC
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-DTSTAMP:20231015T180344Z
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@@ -504,7 +504,7 @@ DTSTART;TZID=W. Europe Standard Time:20230921T100000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
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 TRANSP:OPAQUE
 STATUS:CONFIRMED
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@@ -526,7 +526,7 @@ DTSTART;TZID=W. Europe Standard Time:20230921T133000
 DTEND;TZID=W. Europe Standard Time:20230921T150000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
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@@ -549,7 +549,7 @@ DTSTART;TZID=W. Europe Standard Time:20230926T113000
 DTEND;TZID=W. Europe Standard Time:20230926T130000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
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@@ -574,7 +574,7 @@ DTSTART;TZID=W. Europe Standard Time:20230928T120000
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@@ -597,7 +597,7 @@ DTSTART;TZID=W. Europe Standard Time:20231003T100000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
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 TRANSP:OPAQUE
 STATUS:CONFIRMED
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@@ -620,7 +620,7 @@ DTSTART;TZID=W. Europe Standard Time:20231005T100000
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-DTSTAMP:20231015T180344Z
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@@ -644,7 +644,7 @@ DTSTART;TZID=W. Europe Standard Time:20231010T103000
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 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
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@@ -668,7 +668,7 @@ DTSTART;TZID=W. Europe Standard Time:20231010T120000
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-DTSTAMP:20231015T180344Z
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@@ -692,7 +692,7 @@ DTSTART;TZID=W. Europe Standard Time:20231010T120000
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-DTSTAMP:20231015T180344Z
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@@ -716,7 +716,7 @@ DTSTART;TZID=W. Europe Standard Time:20231012T163000
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@@ -742,7 +742,7 @@ DTSTART;TZID=W. Europe Standard Time:20231012T170000
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-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:1
@@ -765,7 +765,7 @@ DTSTART;TZID=W. Europe Standard Time:20231012T180000
 DTEND;TZID=W. Europe Standard Time:20231012T193000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
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@@ -789,7 +789,7 @@ DTSTART;TZID=W. Europe Standard Time:20231017T120000
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 CLASS:PUBLIC
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-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -805,6 +805,30 @@ X-MICROSOFT-DISALLOW-COUNTER:FALSE
 END:VEVENT
 BEGIN:VEVENT
 DESCRIPTION:\n
+UID:040000008200E00074C5B7101A82E008000000009036E7C6C7E7D901000000000000000
+ 01000000095A6A294B18E6C4CBD78CBF82CB3429B
+RECURRENCE-ID;TZID=W. Europe Standard Time:20231017T000000
+SUMMARY:Unterweisung Lasercutter
+DTSTART;TZID=W. Europe Standard Time:20231017T120000
+DTEND;TZID=W. Europe Standard Time:20231017T133000
+CLASS:PUBLIC
+PRIORITY:5
+DTSTAMP:20231016T180317Z
+TRANSP:OPAQUE
+STATUS:CONFIRMED
+SEQUENCE:0
+LOCATION:
+X-MICROSOFT-CDO-APPT-SEQUENCE:0
+X-MICROSOFT-CDO-BUSYSTATUS:BUSY
+X-MICROSOFT-CDO-INTENDEDSTATUS:BUSY
+X-MICROSOFT-CDO-ALLDAYEVENT:FALSE
+X-MICROSOFT-CDO-IMPORTANCE:1
+X-MICROSOFT-CDO-INSTTYPE:3
+X-MICROSOFT-DONOTFORWARDMEETING:FALSE
+X-MICROSOFT-DISALLOW-COUNTER:FALSE
+END:VEVENT
+BEGIN:VEVENT
+DESCRIPTION:\n
 RRULE:FREQ=WEEKLY;UNTIL=20231130T093000Z;INTERVAL=2;BYDAY=TH;WKST=MO
 UID:040000008200E00074C5B7101A82E0080000000060F294F875ECD901000000000000000
  010000000DB0E372721646D42B3CC09F176E16485
@@ -813,7 +837,7 @@ DTSTART;TZID=W. Europe Standard Time:20231019T103000
 DTEND;TZID=W. Europe Standard Time:20231019T113000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
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@@ -837,7 +861,7 @@ DTSTART;TZID=W. Europe Standard Time:20231019T120000
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 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -861,7 +885,7 @@ DTSTART;TZID=W. Europe Standard Time:20231019T120000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
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@@ -885,7 +909,7 @@ DTSTART;TZID=W. Europe Standard Time:20231023T120000
 DTEND;TZID=W. Europe Standard Time:20231023T170000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
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@@ -908,7 +932,7 @@ DTSTART;TZID=W. Europe Standard Time:20231024T120000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
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@@ -934,7 +958,7 @@ DTSTART;TZID=W. Europe Standard Time:20231109T170000
 DTEND;TZID=W. Europe Standard Time:20231109T193000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
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@@ -958,7 +982,7 @@ DTSTART;TZID=W. Europe Standard Time:20231109T180000
 DTEND;TZID=W. Europe Standard Time:20231109T193000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -984,7 +1008,7 @@ DTSTART;TZID=W. Europe Standard Time:20231214T170000
 DTEND;TZID=W. Europe Standard Time:20231214T193000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:4
@@ -1008,7 +1032,7 @@ DTSTART;TZID=W. Europe Standard Time:20231214T180000
 DTEND;TZID=W. Europe Standard Time:20231214T193000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
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@@ -1034,7 +1058,7 @@ DTSTART;TZID=W. Europe Standard Time:20240111T170000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
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@@ -1060,7 +1084,7 @@ DTSTART;TZID=W. Europe Standard Time:20240208T170000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
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@@ -1086,7 +1110,7 @@ DTSTART;TZID=W. Europe Standard Time:20240314T170000
 DTEND;TZID=W. Europe Standard Time:20240314T193000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:7
diff --git a/public/data/calendar.ics b/public/data/calendar.ics
index f40343298ee979e5c308406956fc64e37a95bda1..70254e5376492d5d573dd57c96b0841536183eb4 100644
--- a/public/data/calendar.ics
+++ b/public/data/calendar.ics
@@ -28,7 +28,7 @@ DTSTART;TZID=W. Europe Standard Time:20230718T100000
 DTEND;TZID=W. Europe Standard Time:20230718T160000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:2
@@ -53,7 +53,7 @@ DTSTART;TZID=W. Europe Standard Time:20230718T103000
 DTEND;TZID=W. Europe Standard Time:20230718T111500
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:TRANSPARENT
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -77,7 +77,7 @@ DTSTART;TZID=W. Europe Standard Time:20230727T103000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:TRANSPARENT
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -100,7 +100,7 @@ DTSTART;TZID=W. Europe Standard Time:20230808T123000
 DTEND;TZID=W. Europe Standard Time:20230808T143000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -121,7 +121,7 @@ DTSTART;VALUE=DATE:20230810
 DTEND;VALUE=DATE:20230818
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:TRANSPARENT
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -144,7 +144,7 @@ DTSTART;TZID=W. Europe Standard Time:20230810T140000
 DTEND;TZID=W. Europe Standard Time:20230810T200000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:3
@@ -168,7 +168,7 @@ DTSTART;TZID=W. Europe Standard Time:20230810T143000
 DTEND;TZID=W. Europe Standard Time:20230810T151500
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:TRANSPARENT
 STATUS:CONFIRMED
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@@ -191,7 +191,7 @@ DTSTART;TZID=W. Europe Standard Time:20230815T113000
 DTEND;TZID=W. Europe Standard Time:20230815T130000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:TRANSPARENT
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -214,7 +214,7 @@ DTSTART;TZID=W. Europe Standard Time:20230815T130000
 DTEND;TZID=W. Europe Standard Time:20230815T150000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:TRANSPARENT
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -240,7 +240,7 @@ DTSTART;TZID=W. Europe Standard Time:20230829T100000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -264,7 +264,7 @@ DTSTART;TZID=W. Europe Standard Time:20230829T100000
 DTEND;TZID=W. Europe Standard Time:20230829T160000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -291,7 +291,7 @@ DTSTART;TZID=W. Europe Standard Time:20230831T100000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -315,7 +315,7 @@ DTSTART;TZID=W. Europe Standard Time:20230905T100000
 DTEND;TZID=W. Europe Standard Time:20230905T160000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -338,7 +338,7 @@ DTSTART;TZID=W. Europe Standard Time:20230905T123000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -362,7 +362,7 @@ DTSTART;TZID=W. Europe Standard Time:20230912T100000
 DTEND;TZID=W. Europe Standard Time:20230912T160000
 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
 TRANSP:OPAQUE
 STATUS:CONFIRMED
 SEQUENCE:0
@@ -390,7 +390,7 @@ DTSTART;TZID=W. Europe Standard Time:20230914T113000
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 CLASS:PUBLIC
 PRIORITY:5
-DTSTAMP:20231015T180344Z
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 TRANSP:OPAQUE
 STATUS:CONFIRMED
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@@ -416,7 +416,7 @@ DTSTART;TZID=W. Europe Standard Time:20230914T170000
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-DTSTAMP:20231015T180344Z
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@@ -437,7 +437,7 @@ DTSTART;TZID=W. Europe Standard Time:20230914T173000
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-DTSTAMP:20231015T180344Z
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@@ -457,7 +457,7 @@ DTSTART;VALUE=DATE:20230919
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-DTSTAMP:20231015T180344Z
+DTSTAMP:20231016T180317Z
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+RECURRENCE-ID;TZID=W. Europe Standard Time:20231017T000000
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