depends
depends for what purpose. For morning blessings- Birkot Hashachar I heard one can say anytime before the sunset if that is when you woke up For Korbanot Shacharit and Shacharit prayers- till mid-day which might be about 11.30 now Also depends on which culture- afternoon from where I come from IS AFTERNOON tht is, after 12 .But is Israel it is usually after 4 PM