When you see the star Sirius rising above the horizon it means fall is on the way. Autumn isn't caused by the rising of Sirius, it's a time-frame indicator (or, we could just look at a calendar....)
42 posted on 09/02/2015 4:13:04 AM PDT by Psalm 73
("Gentlemen, you can't fight in here - this is the War Room".)