Newborn babies are most likely to make their appearance in the world at the start of the working day, a new study has found.

Like the Duchess of Cambridge with her second child, most mothers welcome their new arrivals between the hours of 8am and 6pm, researchers in the US have found. And like Princess Charlotte, who was born at 8.34am, newborn babies are most likely to arrive in the hour of 8am.

Not to be left out, the new princess's older brother Prince George also conformed to the general pattern, arrive at 4.24pm on July 22, 2013. A new report, published today by the Centers for Disease Control and Prevention, suggests doctors could be using medical interventions, such as Caesarean sections, to schedule births during working hours.

To arrive at their conclusions researchers examined the birth certificates from 41 states, Livescience reports. They found births peaked during the hour of 8am, when 6.3 per cent of babies were born. And for pregnant mothers who miss the hour of eight, they are most likely to give birth at midday, when six per cent of babies were born.

In comparison, less than three per cent of new arrivals were welcomed from midnight to 7am, experts noted. The CDC report, states: 'Differences in the likelihood of delivery during the day are partly due to childbirth interventions such as Caesarean delivery and induction of labour.'

Researchers found most babies delivered by C-section (11.6 per cent) arrived in the hour of 8am, while seven per cent of C-sections were performed around midday. Natural deliveries that were induced increased during the morning, peaking at around 3pm but decreasing after 6pm.

Those that were not induced occurred throughout the day. Over the weekend, births were more likely to occur late in the evening and in the early hours.

The researchers said: 'In general, these births have fewer interventions, and thus likely exhibit a more natural time of day delivery pattern compared with births delivered in hospitals.' In the UK, around 25 per cent of deliveries are by C-section, above the World Health Organisation recommended rate of 15 per cent.

The NHS states that mothers over the age of 35 are statistically more likely to need a Caesarean section. That is because older mothers are more likely to be at risk of complications, including high-blood pressure, gestational dabetes, having a large baby, and the baby adopting an awkward position in the womb.

A World Health Organisation report revealed this week that women in the UK are twice as likely to die during pregnancy and childbirth as mothers in Poland and Belarus. Growing numbers of older mothers, obesity and high rates of IVF are all to blame for Britain's poor ranking, experts have suggested.