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  • I did not measure it precisely, my reply was based on the example in the app linked which based on 5 sec drift in 24 hours which is over 50ppm.
    I will try measure it more precisely.
    20ppm is 1.7s per day.
    I have two Banglejs 2, the first is where I experienced big drift, only had the 2nd for a week and have feeling it more accurate.


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