Royal baby's due date is fast approaching, world's media waiting

(CNN) -- The royal baby could be here any time now!

The Duchess of Cambridge's due date is believed to be sometime in mid-July.

The press pit outside the hospital is growing by the day. It's a sea of metal ladders for the world's media -- all awaiting the arrival of the third in line to the throne.

When the time comes, there will be a clear first indication the baby is finally on the way. The palace will announce the Duchess of Cambridge has been admitted to the hospital in the early stages of labor.

Then, the prime minister, the Middletons and the Queen will be notified.

A birth notice will be written at the hospital and will be signed by several medical staff. It will include the baby's sex, birth weight and time of birth.

The notice will be driven via police escort from the Lindo Wing of Saint Mary's Hospital to Buckingham Palace.

It will be brought inside Buckingham Palace before being displayed on an easel near the gates of the Palace Forecourt -- the very same easel that was used to announce the birth of Prince William.

Then, there will be two simultaneous but separate gun salutes: a 41-round salute in Green Park, fired by the king's troop and a 62-round salute at the tower of London, signaling to the country and the world that the future monarch has finally arrived.