Pronunciation: [ɐ dˈe͡ɪz] (IPA) 
The spelling of the phrase "a days" is incorrect. The proper phrase is "nowadays." The IPA transcription for the correct spelling is /ˈnaʊəˌdeɪz/. The word comprises of four syllables, with the primary stress on the second syllable. The vowel sound in the first syllable is the diphthong "ow," and the vowel sound in the third syllable is the schwa "uh." The final syllable has a long "a" sound followed by a voiced "z" sound.
"A day's" is a contraction of the phrase "a day is" or "a day has." It is used to indicate possession or time duration, typically referring to the events, activities, or progress achieved within the course of one day.
In terms of possession, "a day's" is used to express that something belongs to or is associated with a particular day. For example, "a day's work" refers to the tasks or duties completed during the span of a single day, emphasizing the effort or productivity achieved. Similarly, "a day's journey" denotes the distance or travel accomplished within a day.
Regarding time duration, "a day's" signifies the length or extent of time that has passed or will pass within one day. For instance, "a day's notice" suggests that a specific period of time is required for preparation or arrangement before an event or action can occur. Another example would be "a day's wait," indicating the timeframe one has to wait until a particular event or appointment.
In summary, "a day's" acts as a possessive or temporal marker, symbolizing the connection to a specific day or representing the duration of time encompassed within a day. Its usage can be found in a variety of contexts, such as work, travel, notice, or waiting periods.
The phrase "a days" is derived from the Old English phrase "on dagum", which translates to "in the days" or "in these days". Over time, "on dagum" evolved into "a dayes" and eventually streamlined to "a days". It is often used to indicate a specific time period or to discuss current trends, activities, or practices.
