Approximate
ケイ, キョウ
ころ, ごろ
頃 (ケイ, キョウ、ころ, ごろ) Approximate
概 (ガイ、おおむ) Approximation
傾 (ケイ、かたむ) Lean
頃 means Approximate Time. It's always time related (never location).