This is the 10237th most frequent Russian word.
блокадному
"Блокадному" means "relating to the blockade" in English.
Here, 'блокадному' describes something related to a 'blockade', specifically used as an adjective in the dative case reflecting contextual attribution.
Мой дедушка рассказывал о своём блокадному детстве.
My grandfather talked about his blockade childhood.
'блокадному' is used to denote 'related to the siege', appearing as an adjective describing 'Leningrad' in the dative case due to the prepositional usage with 'памятнику'.
Мы ходили к памятнику блокадному Ленинграду.
We visited the monument to besieged Leningrad.
The form 'блокадному' here qualifies 'time', suggesting a period associated with the blockade and functions in the dative case for grammatical consistency within the sentence's structure.