The present day. In this house, a word that may cover a stretch far longer than one turn of the earth.
Old English to daege, literally 'on the day', fused the preposition to (to, at) with daege, the dative case of daeg (day).
The present day, which in the house's own records may stretch across a long working span rather than one turn of the clock. What is called today is bounded by attention, not by the sun alone.