Who am I?

夏至是二十四节气之一，在每年公历6月21日或22日。夏至这天，太阳直射地面的位置到达一年的最北端，几乎直射北回归线，此时，北半球的白昼达最长，且越往北越长。

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This entry was posted on Friday, June 21st, 2013 at 17:54 and is filed under 我的日志. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.