Wiktionary
along about
adv. (context idiomatic informal English) approximately; at around some time.
Usage examples of "along about".
He thought about a hot roll and coffee for his second breakfast, along about ten.
The washroom went out along about August, but I got it fixed without much trouble.
The Shakespearean work to which I actually do owe a debt here came along about eight years after Merchant.
Naked and grass-stained, he was crawling along about five feet behind the mower, eating the cut grass.
Lucille never did get over her peeve, so I married Alice along about the middle of February.