Antonyms for "all day all night" could include phrases such as "occasionally," "rarely," "infrequently," "sporadically," or "from time to time." These antonyms signify a lack of constant or consistent presence or activity. "Intermittent" or "episodic" are other possible antonyms, conveying the idea of something that happens in bursts or intervals rather than continuously. Alternatively, "limited hours" or "restricted time frame" could be considered antonyms, as they suggest a constraint on the duration or frequency of an activity. Whatever the antonym, it implies a departure from the idea of sustained or continuous action, a notion that is inherent in the phrase "all day all night."
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