A note on this hourThis English adaptation says three quarters before one, which is 12:15. He prepared his drink, returned to his study and waited for guests, whom he received fully dressed. No duration is given.
Königsberg · teaching years in the 1790s · Recollected teaching-day routineDe Quincey adapts German accounts by Wasianski, Jachmann, Borowski, and others; he was not an eyewitness. This calendar follows the habitual sequence in that adaptation. Lectures belong to teaching days, dinner length varied, and uncertain boundaries are labeled.
1795 is a representative display year selected by Typical Tuesday. The source describes an established teaching-era routine in the 1790s. It resumes Wasianski’s close association in 1790 and separately describes changes in old age; this is not the schedule of Kant’s final illness.