Neonatal period extends up to –
Neonate (Newborn)

From birth to under four weeks of age (< 28 days), the infant is called neonate.
The neonatal period has been further subdivided into -


Early neonatal period  → the First week of life (< 7 days)
Late neonatal period → 7th to < 28th day

Term neonate (term baby)

Any neonate born between 37 and < 42 weeks (259 - 293 days) of pregnancy irrespective of the birth weight.

Preterm baby

Any neonate born before 37 weeks (<259 days) of pregnancy irrespective of the birth weight.

Post-term baby

Any neonate born at or after 42 weeks (294 days or more) of pregnancy irrespective of the birth weight.
21 days of life
30 days of life
28 days of life
35 days of life