Austin Area
https://austinh3.org/calendar/

CENTEX/Hill Country Area
https://hch3.net/nexthash.htm

Corpus Christi Area
https://www.c2h3.com/calendar

Dallas Fort Worth Metroplex
http://dfwhhh.org/calendar/

El Paso Area
https://www.elpasohash.com/calendar

Houston Area
https://h4.org/calendar/

San Antonio Area
https://www.sah3.com/events/