The 2021 Session will be a 60 day “long session”, and begins on January 19, 2021.
New Mexico’s legislature meets once a year, beginning on the third Tuesday of January for alternating 30 (even years) or 60 (odd years) day sessions. 30 day sessions are supposed to be for budget items, more than for “major legislation”. However, much important work is done in the interim, including during interim legislative meetings. You can always see what’s going on at the legislature’s website.
The state has published a basic, but informative document on the legislative process here.
The state capitol building, aka “the roundhouse” is located at:
Railrunner shuttle at Santa Fe end here.