|years:|| 2173 2174 2175 2176 2177 2178 2179
|decades:||2140s 2150s 2160s 2170s 2180s 2190s 2200s|
|centuries:||21st century - 22nd century - 23rd century|
- Avaranthi sh'Rothress of Andor succeeds T'Maran of Vulcan, and becomes fourth President of the United Federation of Planets. She assumes office in 2177. 
- The Nexus passes through the Alpha Quadrant in its 39-year cycle. No recorded encounters.