[noun] + に限って
[verb (plain)] + 時に限って
Note: Often used with temporal nouns (日、時、今日) or specific people/things to express irony or emphasis.
に限って (にかぎって) is used to single out a specific person, thing, or situation, often with the nuance that something unexpected, ironic, or contradictory happens precisely in that case. It expresses the speaker's frustration, surprise, or insistence that "of all things/people/times, this is the one where…"
There are two main usages:
This is the most common usage. The speaker highlights that something undesirable or unexpected happens precisely with the one person, thing, or time you'd least expect.
In this pattern, the speaker is expressing something like "of all the possible times/people/things, it's this one that causes trouble." The second clause typically describes something negative or contrary to expectation.
に限って can also simply mean "only" or "limited to," restricting the scope to a particular group or condition. This usage overlaps with にかぎり限り, which is more formal.