Das Gradnetz der Erde und Zeitzonen sind wichtige Konzepte für... Show more
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Updated Mar 13, 2026
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Gradnetz und Zeitzonen der Erde für Kinder - Zeitzonen Karte & Tabelle, Nullmeridian & Datumsgrenze erklärt
Gradnetz und Zeitzonen der Erde
Das Gradnetz der Erde ist ein gedachtes Liniennetz, das über die Erdkugel gezogen wird. Es besteht aus sich senkrecht schneidenden Breiten- und Längenkreisen und dient der Bestimmung der geographischen Lage sowie der Orientierung auf der Erde.
Breitengrade
Die Breitengrade verlaufen parallel zum Äquator, der die Erde in die Nord- und Südhalbkugel teilt. Es gibt insgesamt 180 Breitenkreise, je 90 in Richtung Nord- und Südpol. Der Abstand zwischen zwei Breitenkreisen beträgt immer 111 km.
Highlight: Der Äquator ist mit einem Umfang von rund 40.000 km der längste Breitenkreis und wird auch "Großkreis" genannt.
Vocabulary: Breitengrade werden vom Äquator aus gezählt: 0° bis 90° N (nördliche Breite) und 0° bis 90° S (südliche Breite).
Längengrade
Die Längenkreise verlaufen senkrecht zu den Breitenkreisen und kreuzen sich alle im Nord- und Südpol. Es gibt insgesamt 180 Längenkreise, die vom Nullmeridian (0°) aus gezählt werden.
Definition: Ein Meridian ist ein halber Längenkreis, der von Pol zu Pol verläuft.
Example: Der Nullmeridian verläuft durch die alte Sternwarte von Greenwich bei London, England.
Vom Nullmeridian aus zählt man 180° nach Osten und 180° nach Westen. Auf der gegenüberliegenden Seite der Erdkugel, bei 180° O/W, befindet sich die Datumsgrenze.
Highlight: Alle Meridiane sind rund 20.000 km lang und werden auch "Mittagslinien" genannt, da alle Orte auf demselben Meridian zur gleichen Zeit Mittag haben.
Zeitzonen der Erde
Die Einführung von Zeitzonen wurde durch die Globalisierung des Nachrichtenverkehrs und die Zunahme des internationalen Verkehrs notwendig. 1884 einigten sich Vertreter von 25 Staaten auf der Internationalen Meridian-Konferenz in Washington darauf, die Erde in 24 Zeitzonen aufzuteilen.
Vocabulary: Jede Zeitzone umfasst 15 Längengrade, was einer Stunde Zeitunterschied entspricht.
Highlight: Der Greenwich-Meridian wurde zum Nullmeridian erklärt und bildet die Basis für die Null-Zeitzone, die sich von 7,5 Grad westlich bis 7,5 Grad östlich des Greenwich-Meridians erstreckt.
Eine Übersichtskarte zeigt die Verteilung der Zeitzonen über die Kontinente, von -11 Stunden im Westen bis +12 Stunden im Osten relativ zur Greenwich Mean Time (GMT).
Example: Nordamerika erstreckt sich über mehrere Zeitzonen von -10 bis -4, während Europa hauptsächlich in den Zeitzonen 0 bis +2 liegt.
Diese Einteilung in Zeitzonen ermöglicht eine standardisierte Zeitmessung weltweit und erleichtert die internationale Kommunikation und Koordination erheblich.
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
Where can I download the Knowunity app?
You can download the app in the Google Play Store and in the Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
Most popular content: Breitengrad
Most popular content in Geographie/Erdkunde
Most popular content
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
Gradnetz und Zeitzonen der Erde für Kinder - Zeitzonen Karte & Tabelle, Nullmeridian & Datumsgrenze erklärt
Das Gradnetz der Erde und Zeitzonen sind wichtige Konzepte für die globale Orientierung und Zeitbestimmung. Das Gradnetz der Erde besteht aus Breiten- und Längengraden, die eine präzise Ortsbestimmung ermöglichen. Die Zeitzonen der Erdewurden eingeführt, um eine einheitliche Zeitmessung weltweit... Show more
Gradnetz und Zeitzonen der Erde
Das Gradnetz der Erde ist ein gedachtes Liniennetz, das über die Erdkugel gezogen wird. Es besteht aus sich senkrecht schneidenden Breiten- und Längenkreisen und dient der Bestimmung der geographischen Lage sowie der Orientierung auf der Erde.
Breitengrade
Die Breitengrade verlaufen parallel zum Äquator, der die Erde in die Nord- und Südhalbkugel teilt. Es gibt insgesamt 180 Breitenkreise, je 90 in Richtung Nord- und Südpol. Der Abstand zwischen zwei Breitenkreisen beträgt immer 111 km.
Highlight: Der Äquator ist mit einem Umfang von rund 40.000 km der längste Breitenkreis und wird auch "Großkreis" genannt.
Vocabulary: Breitengrade werden vom Äquator aus gezählt: 0° bis 90° N (nördliche Breite) und 0° bis 90° S (südliche Breite).
Längengrade
Die Längenkreise verlaufen senkrecht zu den Breitenkreisen und kreuzen sich alle im Nord- und Südpol. Es gibt insgesamt 180 Längenkreise, die vom Nullmeridian (0°) aus gezählt werden.
Definition: Ein Meridian ist ein halber Längenkreis, der von Pol zu Pol verläuft.
Example: Der Nullmeridian verläuft durch die alte Sternwarte von Greenwich bei London, England.
Vom Nullmeridian aus zählt man 180° nach Osten und 180° nach Westen. Auf der gegenüberliegenden Seite der Erdkugel, bei 180° O/W, befindet sich die Datumsgrenze.
Highlight: Alle Meridiane sind rund 20.000 km lang und werden auch "Mittagslinien" genannt, da alle Orte auf demselben Meridian zur gleichen Zeit Mittag haben.
Zeitzonen der Erde
Die Einführung von Zeitzonen wurde durch die Globalisierung des Nachrichtenverkehrs und die Zunahme des internationalen Verkehrs notwendig. 1884 einigten sich Vertreter von 25 Staaten auf der Internationalen Meridian-Konferenz in Washington darauf, die Erde in 24 Zeitzonen aufzuteilen.
Vocabulary: Jede Zeitzone umfasst 15 Längengrade, was einer Stunde Zeitunterschied entspricht.
Highlight: Der Greenwich-Meridian wurde zum Nullmeridian erklärt und bildet die Basis für die Null-Zeitzone, die sich von 7,5 Grad westlich bis 7,5 Grad östlich des Greenwich-Meridians erstreckt.
Eine Übersichtskarte zeigt die Verteilung der Zeitzonen über die Kontinente, von -11 Stunden im Westen bis +12 Stunden im Osten relativ zur Greenwich Mean Time (GMT).
Example: Nordamerika erstreckt sich über mehrere Zeitzonen von -10 bis -4, während Europa hauptsächlich in den Zeitzonen 0 bis +2 liegt.
Diese Einteilung in Zeitzonen ermöglicht eine standardisierte Zeitmessung weltweit und erleichtert die internationale Kommunikation und Koordination erheblich.
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
Where can I download the Knowunity app?
You can download the app in the Google Play Store and in the Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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Most popular content: Breitengrad
Most popular content in Geographie/Erdkunde
Most popular content
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user