Every page selling the Everest Base Camp helicopter tour describes the same things: the peaks, the glacier, the breakfast. Very few describe the day. Here is the day.
04:45, your hotel
You are awake before the city is. The pickup is early because the whole tour depends on being over the Khumbu before the cloud starts building, and that window closes faster than most people expect.
Dress for two climates. It will be perhaps twelve degrees in Kathmandu and well below freezing when you step out at five thousand metres. The aircraft is not heated in any meaningful sense.
05:30, the domestic terminal
Passports, then the scale. You are weighed, and so is your bag. People find this odd and occasionally embarrassing. It is neither: it is the input to a calculation about how much fuel can be carried to a landing site at 5,545 metres, and an estimate is no use.
Five kilos is the baggage allowance. That is a camera, a jacket and a hat. Everything else stays in the hotel.
06:15, waiting
This is the part nobody writes about. You will wait. Air traffic slots at Tribhuvan in the morning are congested, and helicopters queue behind fixed-wing departures. Twenty minutes on the apron is normal. An hour is not unusual.
It is also when the day gets decided. If the crew is watching the Lukla reports and saying little, that is because they are deciding whether to launch. Let them.
06:40, airborne
The first twenty minutes are not the interesting part. You climb out of the valley and cross a long succession of ridges and river gorges, terraced and green and unremarkable if you have spent any time in Nepal.
Then the terrain steps up, the rivers turn white, and the first proper wall appears on the right. From there to the top of the valley, nobody talks.
07:20, up the Khumbu
Namche appears as a horseshoe of tin roofs in a bowl. Tengboche is a clearing with a monastery on it. Then the valley narrows, the vegetation gives up, and you are over moraine and ice, with Ama Dablam holding its shape on the right for a surprisingly long time.
The icefall comes into view as a frozen collapse the size of a small town. Base camp, when you pass it, is smaller than you expect, and in autumn it may be almost nothing at all.
07:40, the high landing
Usually Kala Patthar at 5,545 metres, sometimes Gorakshep just below. You get ten to fifteen minutes.
The first thing you notice is not the view. It is that walking twenty metres has made you breathe hard. The second is the cold, which at that altitude in the morning is an entirely different proposition from cold at home.
Move slowly. Take your photographs without running. If your head starts to hurt or you feel sick, say so, and take the oxygen. Nobody will think anything of it; the crew offers it several times a week.
08:15, breakfast at 3,880 metres
The aircraft drops to Syangboche and you walk a few minutes to the Everest View Hotel. Eggs, coffee, and a terrace with Everest at the end of it.
This is more than a photo opportunity. Two thousand metres of descent in twenty minutes is the reason most people feel fine again by the time the coffee arrives.
10:30, back in Kathmandu
You are in the city by mid-morning, slightly wrecked, holding several hundred photographs, and it is not yet lunchtime.
The things nobody tells you
You may not land at base camp. The pads there are built by expeditions on moving glacier ice and are frequently unusable. Kala Patthar is the normal landing site, and the view of Everest from it is better anyway.
The day may be cancelled at any point. Including after you have been weighed, and including after you are airborne. Turning back is a normal outcome, not a failure.
Seat position matters. Ask. The crew will usually accommodate a photographer if you mention it before the manifest is written, and will not if you mention it once the doors are closed.
Altitude is not a personality test. Fit young people get headaches at 5,545 metres and sedentary older people sometimes do not. It has almost nothing to do with fitness.