May

May is the fifth month of the Human year.

On May, 2151, the crew of made First Contact with the Axanar. 

Enterprise's spatial torpedoes were calibrated in the heat of battle in May of 2151 after an early launch in April of the same year. 

Kaitaama ascended to the throne of Krios Prime as First Monarch on May, 2153. 

Duras resumed pursuit of the Enterprise NX into the Delphic Expanse in May of 2153, after waiting for Enterprise to complete a refit on Earth. 

Kathryn Janeway was born on May. 

Enterprise was attacked in the Borderland by two Orion interceptors on May, 2154. 

The Augment Crisis took place in May of 2154. 

Doctor Arik Soong returned to Cold Station 12 in May of 2154 to retrieve Augment embryos stored there. 

Apocrypha
Many events in the non-canon novel Articles of the Federation took place in May of 2380.