I grew up somewhere with actual winters, the kind where by nine at night in January the whole town had basically closed itself down, and I came to Tucson for the job without really thinking through what a desert does with its nights instead. It took me an embarrassingly long time, maybe a full year of overnight shifts, to understand that here, two in the morning isn’t the dead hour it was back home, it’s often when the place actually wakes up, once the heat’s finally let go of the pavement and people can stand to be outside without wanting to lie down in the shade of something.

Driving home after a shift at four or five in the morning in July, the temperature’s finally dropped into something survivable, and there are still people out, walking dogs, sitting on porches with the kind of patience nobody has at ninety-eight degrees at noon. The desert doesn’t cool off the way I expected either, I’d pictured nights out here as cold the way deserts are supposed to be in movies, and some winter nights that’s true, but summer nights just mean merely brutal instead of unbearable, and everyone adjusts their whole schedule around that fact without really talking about it, like it’s just understood.

The clinic parking lot at four in the morning has its own little ecosystem I didn’t expect either. Javelinas moving through in a loose group most nights, unbothered by us, and coyotes far enough off that you hear them before you’d ever see them, this yipping chorus that used to genuinely unsettle me and now just sounds like the neighborhood checking in. I’ve stood out there on a break more times than I can count, still in scrubs, just listening, and it’s become one of the only truly quiet minutes in a shift that otherwise doesn’t slow down much.

What I didn’t expect, coming from somewhere seasonal, is how much of my actual life ended up happening in these hours instead of around them. The reading, the games with Mara, most of it starts after nine and runs well past midnight, not because we’re trying to stay up late exactly, but because the earlier hours belong to work and errands and the heat, and the night is just when there’s finally room. I used to think of myself as someone who’d moved somewhere and adapted to its schedule out of necessity. Six years in, I think it’s closer to the truth that the desert’s actual rhythm, quiet in the punishing daylight hours and awake once it cools, was closer to how I already wanted to live, and Tucson just gave me permission to stop pretending otherwise.

I still call my mother back home sometimes at what looks to her like an unreasonable hour and have to remind her, gently, that here it’s not that late at all. She’s given up arguing about it. Mostly she just asks what I’m reading.