We continuously monitor the status of github.com and all its related services. If there are any interruptions in service, a note will be posted here.
These graphs are sampled periodically from our own internal metrics about the performance and availability of GitHub services. They’re accurate to within a few minutes.
We provide a GitHub Site Status API for consuming this information. If you're a service that integrates with GitHub, you can use these JSON responses to populate your own status dashboard.