Cardan notices the attack in these words--"His diebusquidam conscripserat adversus nostrum de Subtilitate librum, Opus ingens.
Ipse autem eo die in Paeti nostri tyrotarichum imminebam; perpaucis diebus in Pompeianum, post in haec Puteolana et Cumana regna renavigare.
Primo ergo nobis certum sit hæc animantia non in virtute tantum aut in semine, sed actu, et in seipsis, facta fuisse his diebus in quibus facta narrantur.
He wrote to me also quod Papa hoc facit hodiernis diebus multociens (that the Pope does this nowadays very frequently).
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "diebus" in a variety of sentences. We hope that you will now be able to make sentences using this word.