The Weather Page

March 29, 2007|By FRANK ROYLANCE | FRANK ROYLANCE,Sun Reporter -- Weather Blogger

Roger Hicks of Eldersburg heard on TV that March 20 marked the vernal equinox - the day when day and night are equal lengths. But sunrise and sunset times in The Sun were 12 hours apart on the 17th. "Can you explain this?" he asked. I can. At the equinox, the center of the sun's disk sets 12 hours after rising. But official sunrise and sunset times occur when Sol's upper edge appears (or disappears). At the equinox, that means the daylight is actually five minutes longer than the night.

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