★★ Join our fixed departure treks, and get discounts! ★★
Miracle Treks
0
Join our fixed departure groups.

What Is the 2 PM Rule on Everest

Imagine the years committed to training your body alongside over $60,000 spent flying around the globe and spending weeks trekking and acclimatizing your body to a bone-chilling altitude, only to be told "to turn around" just several hundred metres from Mount Everest (the highest mountain in the world). Without reaching the summit, you will miss being able to take a photo of yourself on the "roof of the world" and will begin the long, hazardous trek back into the clouds. Unfortunately, this represents the harsh reality that many climbers face under the 2 PM Rule on Mount Everest. Learning about the 2 PM Rule could ultimately mean the difference between successfully returning home or tragically freezing to death somewhere in the mountains. 

The 2 PM Rule is one of the most understood and yet one of the most painful of all mountaineering regulations. While it is not a binding statute or law, as soon as climbers reach the mountain's south summit of Everest on the summit ridge, the 2 PM Rule becomes law. This regulation is clearly stated; if you have not reached the summit by 2 PM (for Nepal local time), you must immediately return to the base camp, with no exceptions, no negotiations, and no "just a couple of minutes more."

What Exactly Is the 2 PM Rule?

The 2 PM Rule, or Mandatory Turnaround Time, means that any climber who has not reached the summit of Mount Everest (8,848.86 meters) by 2:00 p.m. must turn around and descend immediately, regardless of how far from the summit they still are (even if they are just 50 meters). Once the clock strikes 2:00 p.m., the mountain has effectively won.

The 2 PM Rule applies to climbers ascending to the summit from Camp IV on the South Col, which is the last high camp before reaching the summit. The rule is enforced by expedition leaders and certified Sherpa guides, and though it may seem like a relatively low amount, the consequences for failing to adhere to the rule can be substantial (fines from $750 to $1,500 in accordance with new 2025-2026 regulation in Nepal). The intention of these rules is clear: saving lives by having authorities enforce a life-saving rule.

So why is it 2 PM? 

The answer lies in the science behind how well those who climb high altitudes perform as time goes on, guaranteeing that the afternoon hours are some of the most dangerous of all times to climb Everest or any other high-altitude mountain.

  • Weather: The only window of opportunity for climbing on Everest is very small in duration. The best window occurs during a period of time in late April to early May. Late in the day, the weather can deteriorate very quickly, within a matter of hours. Winds that are considered manageable by 8:00 am can become dangerous by 3:00 pm. An approaching storm can consume the summit ridge very shortly after it has been sighted, rendering fixed ropes invisible and impossible to follow. For this reason, there is a rule that climbers must be off of the exposed upper mountain (above 8000 meters) by 2:00 pm to avoid being caught by developing weather conditions.
  • Oxygen: Supplemental oxygen is a necessity for most climbers attempting to summit Everest. In an effort to maximize the amount of supplemental oxygen that climbers can use while still being safe, the majority of climbers will leave Camp IV between 9:00 pm and midnight. After spending the entire night climbing, the climber will pass the Balcony, climb the Hillary Step, and, finally, arrive at the summit of Everest. This ascent will typically use a significant quantity of supplemental oxygen. In addition, the climber will still need to descend approximately 3–4 hours from the summit before reaching Camp IV to have a reasonable supply of supplemental oxygen. Summiting at 2:00 pm will allow the climber an adequate amount of time to descend safely, but summiting at 3:00 or 4:00 pm will put the climber in a severe oxygen-depleted state and can result in death.
  • Descent: The way down claims far more Everest lives than the way up. While the ascent demands stamina and willpower, the descent requires balance, coordination and critical thinking  all of which hypoxia destroys first. A climber who onsets at noon has the time, day and oxygen to carefully descend from the summit. A climber who onsets at 3:00 PM has only the fading light, deteriorating oxygen supply and a brain that has been deprived of air for hours to make a descent. Each minute spent above 8,000 meters after 2:00 PM increases the chance of death by significant proportions.

A Typical Summit Day Ascent

Summit day on Everest is a 16-20 hour ordeal, both physical and mental that starts well before dawn.

  • 11 PM-12 AM: Climbers depart for camp IV in total darkness at an approximate temperature of -30°C. Headlamps will illuminate the darkness as the long climb commences.
  • 4 AM-5 AM: The Balcony at 8,400 meters, the first major rest stop. Climbers will check the oxygen and view the dawn below.
  • 7 AM-9 AM: The South Summit at 8,749 meters, the psychologically brutal false summit. The actual summit is still 100 vertical meters away over a knife edge ridge.
  • 8 AM-11AM: The ideal summit window. Experienced guides will try to get to the summit between 6 AM-10 AM allowing for ample time to safely descend.
  • 2:00 PM: The Hard Deadline · All climbers must stop climbing and turn around regardless of how far up on the mountain they are at this time. 
  • 6 - 9 PM: Climbers should return to Camp IV before complete darkness, still having some oxygen (for those who have followed the 2 PM Rule). 

"The Lesson Written in Blood:" 1996 

No discussion of the 2 PM Rule would be complete without mentioning the 1996 Everest Disaster that has been documented by Jon Krakauer in "Into Thin Air" and most recently in the film, "Everest." On May 10 - 11, 1996, there were multiple commercial expeditions attempting to summit the mountain simultaneously with many climbers led by veteran climbers Rob Hall and Scott Fischer. There was huge congestion on the mountain due to the number of climbers and there were many bottlenecks at the Hillary Step on the way to the summit. Many climbers continued to push well past the turn around time with some climbers summiting as late as 4:00 PM which was two hours past the 2 PM turn around time. 

A blizzard then hit the upper mountains, 90 mph winds and complete visibility engulfed the upper mountain. Eight climbers died and parts of their bodies still remain on the mountain. The 1996 Everest Disaster demonstrated in absolute clarity that the 2 PM turnaround time is not merely a suggestion but rather a survival protocol for climbing. The event also demonstrated the catastrophic consequences of summit fever.  The overwhelming mental drive to push through to the summit at all cost regardless of how irrational thoughts would suggest going back.

Summit Fever: The Enemy Within

Summit fever, possibly the most perilous danger on a mountain, manifests as tunnel vision resulting in compromised judgement relative to location on a mountain. Consequently, climbers may believe that their summit is much nearer than it actually is and that other climbers will fit into the 2 PM Rule while they will not.

Additionally, the climbers who do not follow the 2 PM Rule prior to the climb have to fight against hypoxia (oxygen deprivation), affecting their ability to judge risk. They may feel stronger than they really are and underestimate distance and time. By the time the climber reaches the Death Zone, their mental capacity is so diminished they will not typically make reasonable decisions to either turn around or return both themselves and their families to the world.

Conclusion

Ultimately, the 2 PM Rule provides climbers with a definitive deadline and an ordered decision point before embarking on an adventure to allow them to override their poor judgement. The 2 PM Rule provides examples of all that the world's highest mountain has taught mankind about pushing ambition and limits. The Rule reflects decades upon decades of climbers' experiences, tragedies, and hard-won wisdom (lots of frostbite, broken families, and lost lives) at the upper levels of Mount Everest.

Making the choice to turn back at two o'clock, despite having the summit in sight and the weather being clear, is the most challenging task another climber faces. However, this choice usually results in people surviving.

Miracle Treks has planned a variety of Himalayan experiences safe for every explorer, from the well-known Everest Base Camp Trek to Summiting, all with complete safety in mind. Our staff has deep roots in the Khumbu region and the knowledge base that no guide books can provide.

Latest Travel Blogs

Join our Newsletter

Sign up to stay updated with latest offers, recent events and more news.
Art representing various natural and cultutal heritages of Nepal
Plan my Trip Whatsapp Contact Us
We use cookies to enhance your experience on our website. By continuing to browse, you agree to our use of cookies.