Fairly certain the "visible from Kathmandu for first time in living memory" is false. Nagarkot village has been a well known tourist attraction for viewing the Everest clearly forever.
> It is known for a sunrise view of the Himalayas including Mount Everest as well as other peaks of the Himalayan range of eastern Nepal. Nagarkot also offers a panoramic view of the Kathmandu Valley.
> It is known for a sunrise view of the Himalayas including Mount Everest as well as other peaks of the Himalayan range of eastern Nepal. Nagarkot also offers a panoramic view of the Kathmandu Valley.
https://en.wikipedia.org/wiki/Nagarkot