In the year 2017, North Korea was involved in the 2017 North Korea crisis, along with other events. The country conducted a nuclear test in September, and several missile tests throughout the year. One of these was the country's first successful test of an intercontinental ballistic missile (ICBM), Hwasong-14. Two missiles were launched over Hokkaido in the Japanese archipelago, in August and in September 2017.
This timeline categorizes 2017 events relevant to North Korea in two groups: North Korea's own actions and internal developments (left column), and the international community interacting or reacting to North Korea (right column). For example, if North Korea launches a missile, that is an event originating in North Korea and would be nested on the left side. And when the United Nations Security Council approves a resolution admonishing North Korea in connection with its tests, that is an event originating from an outside entity but directly relevant to the country, and is listed on the right side.
Note that the dates mostly reflect the publication of the news. News that span more than one day are usually listed according to the earliest day the event begun or was reported, or, they are listed by month but not by day.