päiviikirjoissa

Päiväkirjoissa is a Finnish noun phrase meaning "in diaries." It is the inessive plural form of päi​väkirja (diary) and is used to indicate content that is found within multiple diary books or entries. The phrase is commonly employed in academic writing, journalism, and literary analysis to refer to what diarists have recorded.

In usage, päiväkirjoissa functions as a locational complement, often connecting to verbs or predicates that describe content, perspective, or events as they appear in diaries. For example, sentences such as “Päiväkirjoissa kuvataan kaupungin arkea” or “Päiväkirjoissa ajan kulku näkyy” illustrate how researchers or writers discuss material concentrated within diaries. The expression is versatile and can be used when comparing entries from different diarists or when summarizing themes across a corpus of diaries.

Diaries as sources are valued for immediacy, personal detail, and temporally anchored observations, but scholars note limitations related to subjectivity, selective memory, and privacy concerns. When referring to the content across multiple diaries, päiväkirjoissa helps signal that the discussion draws on several individual records rather than a single volume.

See also: Päiväkirja (diary) and diary literature, as well as methods in diary-based research.