In this short paper, we make use of a recently created lexicon of word-anxiety associations to analyze large amounts of US and Canadian social media data (tweets) to explore *when* we are anxious and what insights that reveals about us. We show that our levels of anxiety on social media exhibit systematic patterns of rise and fall during the day -- highest at 8am (in-line with when we have high cortisol levels in the body) and lowest around noon. Anxiety is lowest on weekends and highest mid-week. We also examine anxiety in past, present, and future tense sentences to show that anxiety is highest in past tense and lowest in future tense. Finally, we examine the use of anxiety and calmness words in posts that contain pronouns to show: more anxiety in 3rd person pronouns (he, they) posts than 1st and 2nd person pronouns and higher anxiety in posts with subject pronouns (I, he, she, they) than object pronouns (me, him, her, them). Overall, these trends provide valuable insights on not just when we are anxious, but also how different types of focus (future, past, self, outward, etc.) are related to anxiety.

翻译：在这篇短文中，我们利用近期构建的词汇-焦虑关联词典，分析了大量美国和加拿大的社交媒体数据（推文），以探究我们*何时*感到焦虑以及这一现象所揭示的深层洞察。研究表明，社交媒体上的焦虑水平在一天中呈现规律性的波动模式——上午8点达到峰值（与人体皮质醇水平的高峰时段一致），中午前后降至最低。焦虑程度在周末最低，在工作周中期最高。我们还通过分析过去、现在和未来时态的句子中的焦虑表达，发现焦虑在过去时态中最高，在未来时态中最低。最后，我们通过考察包含代词的推文中焦虑与平静词汇的使用情况发现：使用第三人称代词（他、他们）的推文比使用第一、第二人称代词的推文表现出更高的焦虑水平；使用主语代词（我、他、她、他们）的推文比使用宾语代词（我、他、她、他们）的推文焦虑程度更高。总体而言，这些趋势不仅揭示了人们感到焦虑的时间规律，还展现了不同类型的关注焦点（未来、过去、自我、外部等）与焦虑之间的关联，为我们提供了宝贵的见解。