I’ve just released WXDailyHistory.php V1.22 - 12-Jul-2019. The WU API was returning bad obsTimeLocal values for any date from June, 2018 or before. The epoch date was being returned in milliseconds (13 digits) instead of the expected 10-digit seconds.
https://github.com/ktrue/WU-History – only WXDailyHistory.php (and the README.md) were changed. No need to reload your cache files for June, 2018 and before… the script handles the date by processing the epoch date (after pruning if need be) to generate the local date based on the tz entry in the returned JSON.
This may also fix some strange errors for Radomir’s wugraphs in month and year mode.
My thanks to Holger of http://dl5ark.heliohost.org for spotting the issue leading to the fix.
Best regards,
Ken