TAKE NOTE.

Imam ash-Shafi'ii said:

"Verily Du'a is accepted on five nights:
...
1) The night of Jumu'ah
2) The night of 'Eid al-Adha
3) The night of 'Eid al-Fitr,
4) The first night of Rajab, and
5) The night of 15th of Sha'ban

Kitab al-Umm