The dogs will be able to transition easily, but the handlers are going to need to get out of the Rally-O mind frame when entering an obedience ring. Much less talking, no body language aside from hand signals (in Rally-O you can stear with your body to encourage very intricate heeling patterns), etc.
Lilies in the late July heat, Lemnos, Greece. The dog days or dog days of summer are the hot, sultry days of summer. They were historically the period following the heliacal rising of the star Sirius, which Greek and Roman astrology connected with heat, drought, sudden thunderstorms, lethargy, fever, mad dogs, and bad luck.
Summer Solstice: The First Day of Summer. Summer solstice is the first day of summer - it's usually between June 20th and June 23rd. In 2016, the summer solstice takes place on June 20th. We know it's summer because the earth's axis tilts toward the sun from June to September - this means warmer weather and longer days.