The changing seasons mark the passing of time.

寒来暑往，斗转星移。

《牛津词典》

The best part of living in Northern Michigan is the changing seasons.

住在北密歇根最棒的事要数换季了。

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Instead, they measured time according to day and night and the changing seasons.

取而代之的是，他们根据白天和黑夜以及变化的季节来计算时间。

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The reality is, a five or ten percent correction for an individual stock, or the broader market, is as normal as the changing seasons.

FORBES: How Not To Be An Emotional Investor

Hiroshige's high viewpoints, abrupt croppings and keen interest in the changing seasons influenced Van Gogh, as well as Claude Monet and other artists of the era.

WSJ: Vincent Van Gogh Up Close | Philadelphia Museum of Art | A Matter of Perspective | By Jonathan Lopez

Both natural events bring the Japanese out en masse to celebrate the changing seasons, with hanami (cherry blossom viewing) parties in the springtime and momiji-gari (maple leaf viewing) in the fall.

BBC: K��y��: Japan��s autumn explosion of colour