וַיְהִי֙ כְּהַיּ֣וֹם הַזֶּ֔ה וַיָּבֹ֥א הַבַּ֖יְתָה לַעֲשׂ֣וֹת מְלַאכְתּ֑וֹ וְאֵ֨ין אִ֜ישׁ מֵאַנְשֵׁ֥י הַבַּ֛יִת שָׁ֖ם בַּבָּֽיִת׃
Eines Tages aber kam er ins Haus, um seine Arbeit zu verrichten, als von den Hausleuten niemand drinnen im Hause war.
Rashi on Genesis
ויהי כהיום הזה AND IT CAME TO PASS ON A CERTAIN DAY — This means as much as “and it came to pass when a certain distinguished day arrived” — a day of merriment, a day of their sacred feast when they all went to the temple of their idols, — she said), “I shall find no day fitting to associate with Joseph as this day”. She therefore told her attendants I am sick and cannot go to the temple (Sotah 36b).
Sforno on Genesis
כהיום הזה, when she raised her eyes to him in lust.
Radak on Genesis
ויהי כהיום הזה, a day, quite similar to this day, when she insistently urged him to sleep with her, occurred. Now a different day occurred when the house was empty of all its other occupants