I have seperate audiomoths set over 3 sampling periods 8-10th March 2021, 13-15th March 2021, and 19-21st March 2021. All were set to record 10:00-19:00 (UTC). On downloading my files those recorded in the first sampling period have recorded from 10am - 6:59pm while the next two sample periods have recorded 11am - 7:59pm. All config.txt files state 10:00-19:00 (UTC) and Timezone (UTC). Any idea why there are time differences??
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Yep, I've been playing around copying files and changing timezones, and it's hard to understand exactly what macOS does, but the WAV file on the SD card and the TEST.TXT file have actual file creation times of 00:47 and 00:36. However, if you change the time zone between opening the SD card and copying TEST.TXT onto the SD card, you can end up with a permanent time offset between the two - in this case one hour
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