Vernal Equinox Approaches, Affecting Daylight Duration
• The vernal equinox marks the start of spring and brings changes in daylight duration.
• Atmospheric refraction extends daylight hours, making the Sun appear to rise earlier and set later.
• Sunrise and sunset definitions, based on the Sun's upper edge, also contribute to longer daylight.
Spring equinox signals changes in daylight duration
The vernal equinox, or spring equinox, is rapidly approaching, signaling the start of spring and significant changes in daylight duration.
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