What is an intermittent fasting diet? – BBC Good Food

For example, the 16:8 diet involves fasting for 16 hours per day and eating within an 8-hour window. One of the most common ways to do this is by skipping breakfast and only eating from midday-8pm, so you are fasting for 16 hours per day (between 8pm and midday the next day). Other variations of the diet involve 6-hour eating periods or shorter.

https://www.bbcgoodfood.com/howto/guide/what-intermittent-fasting-diet