π Day Memories

Recite π as a binary decimal, if you wish.

This page is updated annually, subject to my current time zone.


On π day, 2014,

at about 15:9.26, I ate a chocolate pie (those small ones) during a Chinese literature class, got nearly choked, and had to leave the classroom to search for water… Thank you to my teacher for not being too troubled by my absurd neediness.


On π day, 2015,

I rote memorised the Gaussian distribution’s pdf.

\sqrt(2π)


On π day 2016 (Eastern Time),

I took the liberty of naming the place outside 303-102 the Corner of Rejection. I eat my lunch here now.


On π day 2017 ⋯ Ecstasy of Gold

Nothing really happened.


On π day 2018

We discussed Hawking radiation in the GR office hour, about half a day before the news that Stephen Hawking himself passed away.

I remember sitting at New Sequoia’s dining table, facing south and wanting to freeze more of that moment with me. For a while, I was telling my friends via group chats, and thinking to myself that by missing Cambridge and Caltech, I did miss meeting Hawking for good.

As it washes away, in the end, nothing felt better than being part of an inquisitive community.

Two departments of physics in this case.


π day 2019

This day hasn’t really been lived through yet.


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