Also there is a an antiquated meaning of day which just means a period of time.

The Hebrew word yom translated into the English “day” can mean more than one thing. It can refer to the 24-hour period of time that it takes for the earth to rotate on its axis (e.g., “there are 24 hours in a day”). It can refer to the period of daylight between dawn and dusk (e.g., “it gets pretty hot during the day but it cools down a bit at night”). And it can refer to an unspecified period of time (e.g., “back in my grandfather’s day . . .”).

Half a year latre

Can finally take my fish on a walk

Starting a sentence with “and”?