require 'time' time = Time.now => 2016-07-01 13:03:00 +0900 # マイクロ秒部分を整数で取得 time.usec => 193967 # iso8601フォーマットでマイクロ秒含めて表示 time.iso8601(6) => "2016-07-01T13:03:00.193967+09:00" # 引数に小数点以下の桁数を入れるのでミリ秒なら3を指定する irb(main):009:0> time.iso8601(3) => "2016-07-01T13:03:00.193+09:00" # xmlschemaメソッドも同義 irb(main):010:0> time.xmlschema(3) => "2016-07-01T13:03:00.193+09:00" 文字列からTimeを生成 ISO8601フォーマットの文字列から生成す
![Rubyでミリ秒、マイクロ秒単位のTimeを扱う - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/98c1c07b7031e87c97d5d051d0b5627c9ac0d0ba/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9UnVieSVFMyU4MSVBNyVFMyU4MyU5RiVFMyU4MyVBQSVFNyVBNyU5MiVFMyU4MCU4MSVFMyU4MyU5RSVFMyU4MiVBNCVFMyU4MiVBRiVFMyU4MyVBRCVFNyVBNyU5MiVFNSU4RCU5OCVFNCVCRCU4RCVFMyU4MSVBRVRpbWUlRTMlODIlOTIlRTYlODklQjElRTMlODElODYmdHh0LWFsaWduPWxlZnQlMkN0b3AmdHh0LWNvbG9yPSUyMzIxMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT01NiZzPTAyM2FhNDIzNDk0MDljNjBmNmI3NGI2OTVmNWIxNjU1%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDByaW5fbXUmdHh0LWNvbG9yPSUyMzIxMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT0zNiZ0eHQtYWxpZ249bGVmdCUyQ3RvcCZzPWE4YzFmODY0YTY4MDM0NjhjMmE2OTA3YmZlODBlMDll%26blend-x%3D142%26blend-y%3D436%26blend-mode%3Dnormal%26txt64%3DaW4g5qCq5byP5Lya56S-44K444Oi44OG44Kj44O8%26txt-width%3D770%26txt-clip%3Dend%252Cellipsis%26txt-color%3D%2523212121%26txt-font%3DHiragino%2520Sans%2520W6%26txt-size%3D36%26txt-x%3D156%26txt-y%3D536%26s%3Dc0a993ea60b55a7e452b354e71cc019f)