How long can newborn jaundice be exposed to the sun?

For newborns with physiological jaundice, more sun exposure can be used to promote jaundice regression. It is generally recommended to bask in the sun before 10 a.m. or after 4 p.m. for about 15 minutes each time. If it is about 10 minutes in the sun in summer, water can be properly fed after basking in the sun.