Wake me up when September ends

Driving away from a week-long wedding celebration at a remote beach house, this song comes on the radio.

"It's kinda melancholic, isn't it. Is September supposed to be a melancholic month?"
"Not really. This song is about September 11 and the Iraq war."
"Oh." And it hits me like a ton of bricks.

Last night, I insisted that it is much too early to buy Christmas gifts since it is only November. My buddy looked at me incredulously and said, "November?"

"Oh."

I woke up this morning and lay in bed and wondered where November went.