Almost all are just small local newspapers or college papers.

There's about 50 hits for "world tai chi qigong day". That made an event listing in the NYT:
ELEVENTH ANNUAL WORLD TAI CHI-QIGONG DAY Saturday, beginning at 10 a.m., demonstrations of this ancient Chinese form of exercise, along with martial arts displays. Central Park, East Meadow, north of 97th Street, west of Fifth Avenue , classicalyangtaichi.com.