Looking on the internet deeply has found these results:

How's your day? is the most popular phrase on the web.

How was you day? 1557,000 results on the web	How's your day? 11,260,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
How was the birthday party the other day? How was everybody's day? "How was your day?" and he answers. Anyhow, how was your day? Okay. How was your day? Bay, how was your first day?	How's your day? How's your day? Anyway, how's your day? Good. So how's your day? So how's your day? How's your day? How's your day?

How was you day?

1557,000 results on the web

How's your day?

11,260,000 results on the web

More popular!