BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Norwich Astronomical Society - ECPv6.16.2//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Norwich Astronomical Society
X-ORIGINAL-URL:https://norwichastro.org.uk
X-WR-CALDESC:Events for Norwich Astronomical Society
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:Europe/London
BEGIN:DAYLIGHT
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
TZNAME:BST
DTSTART:20240331T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
TZNAME:GMT
DTSTART:20241027T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
TZNAME:BST
DTSTART:20250330T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
TZNAME:GMT
DTSTART:20251026T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
TZNAME:BST
DTSTART:20260329T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
TZNAME:GMT
DTSTART:20261025T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
TZNAME:BST
DTSTART:20270328T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
TZNAME:GMT
DTSTART:20271031T010000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260310T190000
DTEND;TZID=Europe/London:20260310T210000
DTSTAMP:20260617T030129
CREATED:20260120T112908Z
LAST-MODIFIED:20260120T112908Z
UID:6484-1773169200-1773176400@norwichastro.org.uk
SUMMARY:Harleston Ladies Circle
DESCRIPTION:10 or so visitors
URL:https://norwichastro.org.uk/event/harleston-ladies-circle/
CATEGORIES:Group Visits
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260309T193000
DTEND;TZID=Europe/London:20260309T213000
DTSTAMP:20260617T030129
CREATED:20251230T083652Z
LAST-MODIFIED:20251230T083652Z
UID:6287-1773084600-1773091800@norwichastro.org.uk
SUMMARY:Committee Meeting
DESCRIPTION:Committee meeting – attendance in person at Seething or online by Google Meet (link will be sent out in advance).
URL:https://norwichastro.org.uk/event/committee-meeting-27/
CATEGORIES:Members only
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260306T193000
DTEND;TZID=Europe/London:20260306T203000
DTSTAMP:20260617T030129
CREATED:20251028T112535Z
LAST-MODIFIED:20260105T172815Z
UID:5958-1772825400-1772829000@norwichastro.org.uk
SUMMARY:Natural Solar Radio Emissions and Pulsar hunting [Members]
DESCRIPTION:This is part of the BAA Radio Astronomy Group talks. \nMatej Markovic undergraduate Technical University of Munich\, Department of Aerospace and Geodesy\nMarko Radolovic graduate student – University of Zagreb\, Department of Electronic Systems and Information Processing.\nThese projects are supported by the Astronomical Society Visnjan Croatia.\n–\nThis talk will be in the Cabin via Zoom
URL:https://norwichastro.org.uk/event/natural-solar-radio-emissions-and-pulsar-hunting/
CATEGORIES:Members only
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260227T193000
DTEND;TZID=Europe/London:20260227T203000
DTSTAMP:20260617T030129
CREATED:20251028T112403Z
LAST-MODIFIED:20260105T172659Z
UID:5956-1772220600-1772224200@norwichastro.org.uk
SUMMARY:LOFAR and Exoplanets [Members]
DESCRIPTION:This is part of the BAA Radio Astronomy Group talks \nDr Joseph R. Callingham\nHead of the Square Kilometre Array (SKA) Science Group\, ASTRON\, Netherlands Institute for Radio Astronomy\nAssociate Professor\, Anton Pannekoek Institute for Astronomy\, University of Amsterdam\n\nDr Callingham has been involved in the development of a technique to use the LOFAR radio telescope to study exoplanet environments and recently detected nineteen stellar systems using this technique. He also has detected some of the brightest radio bursts ever detected from a star and found new stars that defy our understanding of how massive stars die.\n–\nThis talk will be in the Cabin via Zoom
URL:https://norwichastro.org.uk/event/lofar-and-exoplanets/
CATEGORIES:Members only
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260221T190000
DTEND;TZID=Europe/London:20260221T230000
DTSTAMP:20260617T030129
CREATED:20250516T180255Z
LAST-MODIFIED:20260208T155753Z
UID:5541-1771700400-1771714800@norwichastro.org.uk
SUMMARY:Tuning into the Local Universe with Andrew Sutkowski [PUBLIC]
DESCRIPTION:Andrew Sutkowski will talk about Radio Astronomy and what can be observed by tuning into the local Universe. \nHe will explain how we can receive natural Radio signals from within our Galaxy and where they come from. The talk will also explain how we\, at the Norwich Astronomical Society\, as amateurs\, are going about detecting these signals. There is a lot to listen to! \nThe observatory will be open for visitors\, and if the skies are clear\, there will be telescopes to look through. \n  \nNOTE: Members will be expected to prove their membership at check-in. \nAll tickets are non-refundable
URL:https://norwichastro.org.uk/event/tuning-into-the-local-universe-with-andrew-sutkowski-public/
LOCATION:Seething Observatory\, The Observatory\, Thwaite St Mary\, NR35 2EQ\, United Kingdom
CATEGORIES:Public
ATTACH;FMTTYPE=image/jpeg:https://norwichastro.org.uk/wp-content/uploads/2021/08/Block-membership.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260209T193000
DTEND;TZID=Europe/London:20260209T213000
DTSTAMP:20260617T030129
CREATED:20251230T083531Z
LAST-MODIFIED:20251230T083531Z
UID:6285-1770665400-1770672600@norwichastro.org.uk
SUMMARY:Committee Meeting
DESCRIPTION:Committee meeting – attendance in person at Seething or online by Google Meet (link will be sent out in advance).
URL:https://norwichastro.org.uk/event/committee-meeting-26/
CATEGORIES:Members only
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260206T193000
DTEND;TZID=Europe/London:20260206T203000
DTSTAMP:20260617T030129
CREATED:20260113T104749Z
LAST-MODIFIED:20260113T104749Z
UID:6415-1770406200-1770409800@norwichastro.org.uk
SUMMARY:What's up in the Night Sky with Adrian Orr - MEMBERS ONLY
DESCRIPTION:Colleagues\, \nWe are lucky that Adrian Orr is willing to continue his talks about what is up in the night sky. \nYou can expect to hear about common well know objects as well as some surprises and evem challenges. So something for everyone\, no matter what skill or experience level you have. Come along and get some suggestions as to what you can look for in the night sky over the next couple of months. \nTalks starts at 7:30 pm
URL:https://norwichastro.org.uk/event/whats-up-in-the-night-sky-with-adrian-orr-members-only/
CATEGORIES:Members only
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260131T190000
DTEND;TZID=Europe/London:20260131T203000
DTSTAMP:20260617T030129
CREATED:20251213T201951Z
LAST-MODIFIED:20260131T180552Z
UID:6226-1769886000-1769891400@norwichastro.org.uk
SUMMARY:Private Group Visit - Cancelled
DESCRIPTION:Patrick and family
URL:https://norwichastro.org.uk/event/private-group-visit-10/
CATEGORIES:Group Visits
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260128T183000
DTEND;TZID=Europe/London:20260128T200000
DTSTAMP:20260617T030129
CREATED:20251210T192829Z
LAST-MODIFIED:20251210T192829Z
UID:6218-1769625000-1769630400@norwichastro.org.uk
SUMMARY:AEA Group Visist
DESCRIPTION:10 or so people\, M Howe liason
URL:https://norwichastro.org.uk/event/aea-group-visist/
CATEGORIES:Group Visits
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260124T190000
DTEND;TZID=Europe/London:20260124T230000
DTSTAMP:20260617T030129
CREATED:20250516T174929Z
LAST-MODIFIED:20260122T162748Z
UID:5531-1769281200-1769295600@norwichastro.org.uk
SUMMARY:Capturing the Light at Night with Paul Haworth [PUBLIC] SOLD OUT
DESCRIPTION:This talk is now sold out\, but we have plenty of tickets for our talks next month and in March\nPaul Haworth will deliver a talk about ‘Capturing the Light at Night’ \nIn Capturing Light at Night\, Paul narrates stories of adventure under the stars and provides a practical introduction into the fascinating and addictive world of nightscape photography.   \nPaul is an award-winning landscape astrophotographer and filmmaker based in the Cambridgeshire Fens.  Through his cinematic nightscape adventures\, he brings the audience into the tranquility of the landscape at night to join him chasing starry skies\, the Milky Way and the aurora while he captures compelling images that reveal the majesty of the cosmos above our heads. \nThe observatory will be open for visitors and if the skies are clear there will be telescopes to look through. \n  \nNOTE: Members will be expected to prove thier membership at check-in. \nAll tickets are non-refundable
URL:https://norwichastro.org.uk/event/capturing-the-light-at-night-with-paul-haworth-public/
LOCATION:Seething Observatory\, The Observatory\, Thwaite St Mary\, NR35 2EQ\, United Kingdom
CATEGORIES:Public
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260123T193000
DTEND;TZID=Europe/London:20260123T203000
DTSTAMP:20260617T030129
CREATED:20251028T112239Z
LAST-MODIFIED:20260105T172611Z
UID:5954-1769196600-1769200200@norwichastro.org.uk
SUMMARY:Live observations from Dwingeloo [Members]
DESCRIPTION:This is part of the BAA Radio Astronomy group talks. \nAn evening at Dwingeloo – Live observations. Tammo Jan Dijkema and Thomas Telkamp\nWith the historic Dwingeloo 25m radio telescope\, we can observe many interesting sources: pulsars\, OH masers\, continuum sources\, galactic and extragalactic neutral hydrogen to name a few. We will present from the cabin of the Dwingeloo telescope.\n–\nThis talk will be in the Cabin via Zoom.\n 
URL:https://norwichastro.org.uk/event/live-observations-from-dwingeloo/
CATEGORIES:Members only
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260120T183000
DTEND;TZID=Europe/London:20260120T210000
DTSTAMP:20260617T030129
CREATED:20260113T215837Z
LAST-MODIFIED:20260113T215837Z
UID:6420-1768933800-1768942800@norwichastro.org.uk
SUMMARY:Private Group Visit
DESCRIPTION:Family
URL:https://norwichastro.org.uk/event/private-group-visit-11/
CATEGORIES:Group Visits
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260112T193000
DTEND;TZID=Europe/London:20260112T213000
DTSTAMP:20260617T030129
CREATED:20251230T083253Z
LAST-MODIFIED:20251230T083253Z
UID:6283-1768246200-1768253400@norwichastro.org.uk
SUMMARY:Committee Meeting
DESCRIPTION:Committee meeting – attendance in person at Seething or online by Google Meet (link will be sent out in advance).
URL:https://norwichastro.org.uk/event/committee-meeting-25/
CATEGORIES:Members only
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20260107T190000
DTEND;TZID=Europe/London:20260107T210000
DTSTAMP:20260617T030129
CREATED:20260106T143217Z
LAST-MODIFIED:20260106T143217Z
UID:6362-1767812400-1767819600@norwichastro.org.uk
SUMMARY:Group Visit
DESCRIPTION:Young farmers group
URL:https://norwichastro.org.uk/event/group-visit/
CATEGORIES:Group Visits
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251227T180000
DTEND;TZID=Europe/London:20251227T200000
DTSTAMP:20260617T030129
CREATED:20251121T123150Z
LAST-MODIFIED:20251121T123150Z
UID:6095-1766858400-1766865600@norwichastro.org.uk
SUMMARY:Private Group Visit
DESCRIPTION:samll group 8-10 year olds – Sarah Organ organiser
URL:https://norwichastro.org.uk/event/private-group-visit-9/
CATEGORIES:Group Visits
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251218T180000
DTEND;TZID=Europe/London:20251218T200000
DTSTAMP:20260617T030129
CREATED:20251107T153919Z
LAST-MODIFIED:20251217T095623Z
UID:6020-1766080800-1766088000@norwichastro.org.uk
SUMMARY:Private Group Visit - CANCELLED
DESCRIPTION:Family booking
URL:https://norwichastro.org.uk/event/private-group-visit-7/
CATEGORIES:Group Visits
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251212T200000
DTEND;TZID=Europe/London:20251212T230000
DTSTAMP:20260617T030129
CREATED:20241122T221141Z
LAST-MODIFIED:20250419T115506Z
UID:4627-1765569600-1765580400@norwichastro.org.uk
SUMMARY:AGM - Christmas meal [Members]
DESCRIPTION:AGM plus Christmas bring and share
URL:https://norwichastro.org.uk/event/agm-christmas-meal/
CATEGORIES:Members only
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251209T183000
DTEND;TZID=Europe/London:20251209T203000
DTSTAMP:20260617T030129
CREATED:20251126T131619Z
LAST-MODIFIED:20251126T184946Z
UID:6136-1765305000-1765312200@norwichastro.org.uk
SUMMARY:Special School group visit
DESCRIPTION:5 adults olus 8 to 10 13/14 year old special school pupils will visits site – Thomas Holloway organising
URL:https://norwichastro.org.uk/event/special-school-group-visit/
CATEGORIES:Group Visits
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251206T190000
DTEND;TZID=Europe/London:20251206T230000
DTSTAMP:20260617T030129
CREATED:20250516T173424Z
LAST-MODIFIED:20251201T104501Z
UID:5521-1765047600-1765062000@norwichastro.org.uk
SUMMARY:Beyond the Milky Way with Andrew Sutkowski [PUBLIC]
DESCRIPTION:Andrew Sutkowski will reveal what lies outside the Milky Way galaxy using the visually stunning software. The tour will reveal just how complex space is\, and that’s just in the tiny bit we observe. \nThe observatory will be open for visitors\, and if the skies are clear\, there will be telescopes to look through. \n  \nNOTE: Members will be expected to prove their membership at check-in. \nAll tickets are non-refundable
URL:https://norwichastro.org.uk/event/beyond-the-milky-way-with-andrew-sutkowski-public/
LOCATION:Seething Observatory\, The Observatory\, Thwaite St Mary\, NR35 2EQ\, United Kingdom
CATEGORIES:Public
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251205T193000
DTEND;TZID=Europe/London:20251205T203000
DTSTAMP:20260617T030129
CREATED:20251028T112107Z
LAST-MODIFIED:20251202T100405Z
UID:5952-1764963000-1764966600@norwichastro.org.uk
SUMMARY:CANCELLED - Exploring the radio emission of Core Collapse Supernova SN2017eaw [Members]
DESCRIPTION:Part of the BAA Radio Group talks \nThis talk will be in the Cabin via Zoom \nThe SPEAKER is now unavailable
URL:https://norwichastro.org.uk/event/exploring-the-radio-emission-of-core-collapse-supernova-sn2017eaw/
CATEGORIES:Members only
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251204T183000
DTEND;TZID=Europe/London:20251204T203000
DTSTAMP:20260617T030129
CREATED:20251111T104428Z
LAST-MODIFIED:20251111T104428Z
UID:6042-1764873000-1764880200@norwichastro.org.uk
SUMMARY:Private Group Visit
DESCRIPTION:Small group – Susanne Whitworth organising
URL:https://norwichastro.org.uk/event/private-group-visit-8/
CATEGORIES:Group Visits
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251122T190000
DTEND;TZID=Europe/London:20251122T230000
DTSTAMP:20260617T030129
CREATED:20250516T170658Z
LAST-MODIFIED:20251121T145118Z
UID:5511-1763838000-1763852400@norwichastro.org.uk
SUMMARY:The Southern Skies with Frank Dutton [PUBLIC]
DESCRIPTION:Frank Dutton will share his experience observing the night skies from the Southern hemisphere\, revealing features we never see from the Northern hemisphere \nFranks talk is based on two recent trips he made to New Zealand and the images of some of the beautiful deep sky objects in the Southern skies taken using a 52mm short focal length refractor with a wide angle CCD camera and the SeeStar 50 an extremely portable smart telescope. The weather was not always cooperative on either trip as the South Island has similar weather conditions to the  UK. \nAlong with the images Frank will also introduce how the Southern Hemisphere night skies were charted by both Western and Asian & Polynesian travellers and observers from before and after the telescope was first used as this is key to an understanding those skies.  \nFrank has lived in Japan\, China and Australia and travelled extensively in Australasia\, during that time he became fascinated with the Asian\, Polynesian and Aboriginal perception of their skies. \nThe observatory will be open for visitors and if the skies are clear there will be telescopes to look through. \n  \nNOTE: Members will be expected to prove thier membership at check-in. \nAll tickets are non-refundable
URL:https://norwichastro.org.uk/event/the-southern-skies-with-frank-dutton-public/
LOCATION:Seething Observatory\, The Observatory\, Thwaite St Mary\, NR35 2EQ\, United Kingdom
CATEGORIES:Public
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251120T180000
DTEND;TZID=Europe/London:20251120T203000
DTSTAMP:20260617T030129
CREATED:20250816T081603Z
LAST-MODIFIED:20250816T081603Z
UID:5678-1763661600-1763670600@norwichastro.org.uk
SUMMARY:Beavers Group Visit
DESCRIPTION:1st Mulbarton Scouts – redbeaverleader@gmail.com (Jen) organising \n24 children 5 adults
URL:https://norwichastro.org.uk/event/beavers-group-visit-2/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251119T180000
DTEND;TZID=Europe/London:20251119T203000
DTSTAMP:20260617T030129
CREATED:20250816T081438Z
LAST-MODIFIED:20250816T081438Z
UID:5676-1763575200-1763584200@norwichastro.org.uk
SUMMARY:Beavers Group Visit
DESCRIPTION:1st Mulbarton Scouts – redbeaverleader@gmail.com (Jen) organising \n24 children 5 adults
URL:https://norwichastro.org.uk/event/beavers-group-visit/
CATEGORIES:Group Visits
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251114T193000
DTEND;TZID=Europe/London:20251114T203000
DTSTAMP:20260617T030129
CREATED:20250914T181004Z
LAST-MODIFIED:20251101T194911Z
UID:5759-1763148600-1763152200@norwichastro.org.uk
SUMMARY:What's interesting in the Nights Sky [Members]
DESCRIPTION:Adrian Orr will give a members talk about some interesting objects to view and/or image in the nights sky over the following few weeks.
URL:https://norwichastro.org.uk/event/whats-interesting-in-the-nights-sky-members-only/
CATEGORIES:Members only
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251112T190000
DTEND;TZID=Europe/London:20251112T203000
DTSTAMP:20260617T030129
CREATED:20250905T170018Z
LAST-MODIFIED:20250905T170018Z
UID:5718-1762974000-1762979400@norwichastro.org.uk
SUMMARY:1st Blofield and Brundall Cubs Group Visit
DESCRIPTION:28 cubs – Ranee Sidkar-Wood organiser
URL:https://norwichastro.org.uk/event/1st-blofield-and-brundall-cubs-group-visit/
CATEGORIES:Group Visits
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251111T190000
DTEND;TZID=Europe/London:20251111T210000
DTSTAMP:20260617T030129
CREATED:20251004T090516Z
LAST-MODIFIED:20251004T090516Z
UID:5879-1762887600-1762894800@norwichastro.org.uk
SUMMARY:41 club group visit
DESCRIPTION:older round tablers – Mark Older organiser \nStart time 7 pm
URL:https://norwichastro.org.uk/event/41-club-group-visit/
CATEGORIES:Group Visits
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251110T193000
DTEND;TZID=Europe/London:20251110T213000
DTSTAMP:20260617T030129
CREATED:20241122T221017Z
LAST-MODIFIED:20250419T115602Z
UID:4625-1762803000-1762810200@norwichastro.org.uk
SUMMARY:Committee meeting
DESCRIPTION:Committee meeting
URL:https://norwichastro.org.uk/event/committee-meeting-24/
CATEGORIES:Members only
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251108T183000
DTEND;TZID=Europe/London:20251108T203000
DTSTAMP:20260617T030129
CREATED:20250926T210709Z
LAST-MODIFIED:20251011T144921Z
UID:5833-1762626600-1762633800@norwichastro.org.uk
SUMMARY:Taverham cub pack
DESCRIPTION:52 people  18:30 start time- Dave Cousins contact
URL:https://norwichastro.org.uk/event/taverham-cub-pack/
CATEGORIES:Group Visits
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/London:20251107T193000
DTEND;TZID=Europe/London:20251107T203000
DTSTAMP:20260617T030129
CREATED:20251028T111908Z
LAST-MODIFIED:20251103T112237Z
UID:5950-1762543800-1762547400@norwichastro.org.uk
SUMMARY:The detection of ultra-high energy cosmic rays and neutrinos through radio signals [Members]
DESCRIPTION:Part of the BAA Radio Astronomy group talk series. \nThis talk will be in the Cabin via Zoom \nDr Katharine Mulrey Associate professor – Astrophysics  (Radboud University\, the Netherlands).\n\nCosmic rays have been observed for over a century\, and yet the sources of the highest energy particles still remain a mystery. We can detect these cosmic rays\, and the associated high energy neutrinos\, through the particle cascades they initiate when they interact in the atmosphere or the earth. In this talk\, I will present an overview of modern efforts to measure these cascades using the radio signals they generate\, in particular\, using radio telescopes like LOFAR and the SKA.
URL:https://norwichastro.org.uk/event/the-detection-of-ultra-high-energy-cosmic-rays-and-neutrinos-through-radio-signals/
CATEGORIES:Members only
END:VEVENT
END:VCALENDAR