twelve o'clock precisely
guid gracious ! I 'll never forget the sensation that I felt at that moment . I 'm surprised that I didna drop dead on the floor . `` Isabella , '' said I , `` are ye no perfectly aware that this is our wedding-day , and that we were to be at the manse at twelve o'clock precisely ? '' `` Ay ! '' said she , `` had ye keepit your tryst at such a time , and at such a place , nae doubt this would have been the day ; but ye couldna be fashed to keep it then -- and I canna be fashed now . '' `` Oh , confound it ! ''