Glossary term: 국제날짜변경선
Description: 국제날짜변경선은 경도 180° 부근을 따라 남북으로 이어지는 가상의 자오선입니다. 국제날짜변경선은 러시아와 알래스카 사이를 남북으로 지나, 미크로네시아 연방과 폴리네시아의 일부 섬들 사이를 지나갑니다. 또한 호주와 뉴질랜드의 동쪽 해역을 지나 남극에 이릅니다. 즉, 국제날짜변경선은 지구상에서 하루의 시작과 끝이 만나는 경계선이며, 이를 기준으로 서쪽 지역은 동쪽 지역보다 하루 앞선 날짜를 갖게 됩니다.
Related Terms:
See this term in other languages
Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".
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In Other Languages
- 아랍어: خط التاريخ الدولي
- 독일어: Datumsgrenze
- 영어: International Date Line
- 프랑스어: Ligne internationale de changement de date
- 이탈리아어: Linea Internazionale del cambio di Data
- 일본어: 国際日付変更線 (external link)
- 브라질 포르투갈어: Linha Internacional de Data
- 중국어 간체: 国际日期变更线
- 중국어 번체: 國際日期變更線
Related Diagrams
International Date Line
Caption: The International Date Line (shown here as a solid line) is a specific meridian which roughly follows the meridian of longitude 180°. The International Date Line passes north–south between Russia and Alaska, through the Pacific Ocean including parts of Micronesia and Polynesia, and to the east of Australia/New Zealand before reaching the South Pole on Antarctica. The International Date Line marks the boundary where calendar dates change by one. Therefore, regions to the west of the International Date line are one calendar day ahead of regions to the east.
The International Date Line does not always exactly follow the meridian of longitude 180°. This is partly to stop some territory of a country falling on the other side of the International Date Line than the rest of that country (the Aleutian Islands in the United States being a good example). Some countries also choose which side of the International Date Line they lie on. Samoa changed which side of the date line it lay on in 2011. At this point the International Date Line was moved to lie to the east of Samoa having previously passed to the west of Samoa.
On the opposite side of the world the dashed line marks the prime meridian (the meridian of longitude 0°). This is a line that passes through the Royal Greenwich Observatory in the UK. All time zones are measure relative to Universal Time which is the zero point for all timezones. The time zones marked at the top of the diagram are the timezones in the shaded regions excluding the effects of daylight savings time.
Credit: Maria Cristina Fortuna/IAU OAE
License: CC-BY-4.0 Creative Commons 저작자표시 4.0 국제 (CC BY 4.0) icons
