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BEGIN:VEVENT
SUMMARY:水星が外合
DTSTART;VALUE=DATE:20260827
DTEND;VALUE=DATE:20260828
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SUMMARY:水星が外合
DTSTART;VALUE=DATE:20260827
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BEGIN:VEVENT
SUMMARY:天王星が留
DTSTART;VALUE=DATE:20260910
DTEND;VALUE=DATE:20260911
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DESCRIPTION: https://eco.mtk.nao.ac.jp/koyomi/
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SUMMARY:天王星が留
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BEGIN:VEVENT
SUMMARY:金星が最大光度
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DTEND;VALUE=DATE:20260919
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SUMMARY:金星が最大光度
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