Accuracy of sunrise/sunset times
Hi, I'm using the civil sunset to civil dawn setting for my nocturnal migrating bird recordings, based on lat/long and using a rounding of 1 minute. My recordings start about 3 minutes later than the scientific sunrise/sunset tables I used in the past. Is this normal variation for the AudioMoth, or is there something else I can do to have an exact match with the times calculated in the tables? Thanks for your assistance!
John
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Hi Alex, yes, they all use lat./long. Your reply sparked me to compare with the calculations of the National Research Council of Canada calculator for Sunrise/Sunset, which should be the most accurate for my location. It gave me a time within 2 minutes of the AudioMoth. Perhaps changing my rounding from 1 to 0 would bring me even closer. In any case, I can live with a 2-minute difference.