time.aws.com が公開 NTP サーバーとして使えるように

time.aws.com が公開 NTP サーバーとして使えるようになっていたのでメモ。
これまでは EC2 からしか使うことができませんでしたが、今後はインターネットからも NTP サーバとして使えるようになります。

Amazon Time Sync is now available over the internet as a public NTP service

Now, you can access the Amazon Time Sync Service at time.aws.com as a publicly available NTP service in addition to the connection provided directly to EC2 instances. This means your devices and infrastructure outside of AWS, such as IOT devices and on-premises infrastructure, can synchronize to the same highly available time sources that were previously accessible only from within our data centers. In the event of a leap second, the Amazon Time Sync service automatically handles this for you by smoothing out the addition, or removal, of the leap second with a 24-hour linear smear from noon to noon UTC.