Tip for Calculating Photoperiods
Jo Leland of Kingwood, TX submitted the chart below, which she uses to aid students calculating photoperiod. Jo has
her students break down the calculation first into whole hours, and
then into minutes.
Calculating Photoperiods--A Way to Doublecheck
Step One-- WHOLE HOURS:
After counting the whole hours, the next step is calculate the remaining minutes between the end of the last whole hour and the sunset time:
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