# Time - Regularity
## おきに
Means "every other". This is used for repeated intervals, after a noun indicating something measurable.
> [!info] Example
> この電車は4分==おきに=={出発|しゅ|っぱつ}します。
> This train leaves every four minutes.
## ごとに
Means "each", "every". Used for intervals.
> [!info] Example
> {彼女|かのじょ}に{会|あ}う==ごとに==、{心|こころ}がドキドキする。
> Every time I see her, my heart pounds.
## おきに vs ごとに
🛠🛠🛠🛠🛠
These two notions can feel similar, but they are slightly different:
https://japanese.stackexchange.com/questions/19619/why-in-this-example-sentence-theres-no-difference-between-%E3%81%94%E3%81%A8%E3%81%AB-and-%E3%81%8A%E3%81%8D%E3%81%AB
https://japanese.stackexchange.com/questions/57870/whats-the-difference-between-%E3%81%9F%E3%81%B3%E3%81%AB-%E3%81%94%E3%81%A8%E3%81%AB-and-%E3%81%8A%E3%81%8D%E3%81%AB
https://imabi.org/whenever-%e6%af%8e%ef%bd%9e-%ef%bd%9e%e6%af%8e%e3%81%ab-%ef%bd%9e%e3%81%8a%e3%81%8d%e3%81%ab/
## たびに
Means "whenever", "every time".
> [!info] Example
> {犬|いぬ}を{見|み}る==たびに=={幸|しあわ}せになる。
> Whenever I see a dog, I feel happy.