About an hour after noon

• Inexact lunch time
• Around lunchtime
• Informal meeting time for lunch
• Vague early afternoon time
• 12:55, e.g
• Around a wee hour: Colloq.
• Vague lunch date time
• Imprecise lunch hour

Wiktionary Word definitions in Wiktionary
n. (context colloquial English) Any time close to one o'clock.