How long to approve new kindle book: How to admob your phonegap app.

Submitted book on April 24, 2019 at 11 pm.
Status then showed: IN REVIEW

On April 27, 2019 when I checked at 1.15 pm, the
Status has changed to: PUBLISHING

See the two figures 1 and 2 below.

Fig 1. Status of new book

Fig2. Details

When I checked again at 3.30, the status of the book has changed to: LIVE as shown in Fig 3 below.

As promised by Amazon, it really falls within 72 hours.