Day Activity Miles Hours Altitude Gain
1 Arrive Kathmandu 4,600
2 Rest and tour Katmandu
3 Tour Katmandu
4 Fly to Lukla 9,250 4,650
5 Trek to Phakding 8,694 -556
6 Trek to Namache 11,300 2,606
7 Rest & tour in Namache
8 Trek to Thame 12,464 1,164
9 Trek to Tengboche 12,683 219
10 Trek to Periche 13,907 1,224
11 Trek to Lobuche 16,174 2,267
12 Trek to Gorak Shep 16,924 750
13 Climb Kala Patar 2-3.5 18,192 1,268
14 Treck to Everest Base Camp 15.-2.5 17,500 -692
15 Trek back to Dingboche 14,450 -3,050
16 Trek to Namache 11,300 -3,150
17 Trek to Lukla (a long day) 9,250 -2,050
18 Fly to Katmandu 4,600 -4,650
19 Rest
20 Fly home
1-May First good weather starts about this date
10-May Most expeditions schedule their summit attempts
23-May Start of 7 day window.  Monsoon pushes north, pushing the jet stream north as well, creating perfect weather over Everest - until the monsoon snows hit.
20-May Most expeditions have this as an end date
1-Jun Permit ends