date function formats a date.
Format the date to YEAR-MONTH-DAY:
now | date "2006-01-02"
Date formatting in Go is a little bit different.
In short, take this as the base date:
Mon Jan 2 15:04:05 MST 2006
Write it in the format you want. Above,
2006-01-02 is the same date, but
in the format we want.