In just under two weeks, my first year at Yale will officially come to a close. It may be cliché, but it feels like just yesterday I walked through the gates of Morse College on an impossibly hot day to start my college career.
https://admissions.yale.edu/bulldogs-blogs/rhayna/2022/04/28/look-back-my-first-year-yale
According to dictionaries, "at" is used to say where something/somebody is or where something happens, which means it doesn't match with words of time. It rather should mean "spent while being in" to match with nouns of time: "my first day spent while being in Yale".
Why I post this post is, should I depend on contexts more than dictionaries in cases like this? Thank you for reading.