While working at McKinsey and Company in Sydney, I met a great number of excellent people, one of whom is senior media designer, Nicole Gilroy.
Nicole has written and illustrated a gorgeous book called What Time do Elephants go to Work? (Resonance Publishing, 2017). The book was inspired by her son, who as a 3-year-old asked this question of his mama. It aims to teach kids how to tell the time, in both digital and analogue formats; no matter your age, however, the book is a colourful delight to leaf through. A smile will appear on your face and stay there!
Link: What time do elephants go to work?, Resonance Publishing