The masters say the most powerful times to do Qigong are at sunrise  and sundown . However, I have found anytime is good to do Qigong. A calming routine before bed is amazing, as is a mid-day flow to stay productive. The only wrong time to do Qigong is in a storm  as Qigong is so powerful it pulls the energy of nature into us, and we want to avoid taking in lightning and storms.  However, Meditation is fantastic to do during adverse weathe