WCU Mosquito & Vector-borne Infectious Disease Laboratory

Aedes triseriatus

Photoperiod and diapause tool. Today’s position on Asheville’s annual daylight curve, with a daily indication of the short-day period associated with egg diapause.

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Today’s daylight
-- hr -- min
-- decimal hours · threshold 13.0 h
Sunrise and sunset
Sunrise--:--
Sunset--:--
Eastern Time
Daily trend
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-- minutes per day
Diapause-associated period
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Evaluating daylight…

Annual photoperiod curve

The blue marker is today. Shaded regions are below the 13-hour operational threshold.

Daylight 13 h threshold Short-day period
Annual daylight duration in Asheville, North Carolina, including the current date and 13-hour threshold crossings.

Today’s interpretation

Calculating today’s photoperiod position…

Next threshold transition

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Calculating…