I constructed a cron job which exectued wunderdates --date=2019-05-30 twice every hour, once 2 minutes before the hour and once 2 minutes after the hour.
Consistent with my earlier post, between 00:00+10 and 09:59+10 the reply from the api had data which belonged to 2019-05-31 - the day after the requested date. Before midnight, and after 10am local time, the reply from the api had data which belonged to 2019-05-30 (as requested). I've pasted below some representative samples of the last 3 lines of the wunderdates output. Before midnight on May 30: Request is for May 30 data. Replies are May 30 data Local Date = UTC date. Thu May 30 20:58:02 2019 UTC+10 epoch: 1559213100 date_epoch_local: 2019-05-30 20:45:00 utcepoch: 1559212100 date_epoch_utc: 2019-05-30 10:45:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T10:45:00Z obsTimeLocal: 2019-05-30 20:45:00 epoch: 1559213400 date_epoch_local: 2019-05-30 20:50:00 utcepoch: 1559212400 date_epoch_utc: 2019-05-30 10:50:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T10:50:00Z obsTimeLocal: 2019-05-30 20:50:00 Number of WU records: 251 Thu May 30 22:58:03 2019 UTC+10 epoch: 1559220000 date_epoch_local: 2019-05-30 22:40:00 utcepoch: 1559219000 date_epoch_utc: 2019-05-30 12:40:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T12:40:00Z obsTimeLocal: 2019-05-30 22:40:00 epoch: 1559220300 date_epoch_local: 2019-05-30 22:45:00 utcepoch: 1559219300 date_epoch_utc: 2019-05-30 12:45:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T12:45:00Z obsTimeLocal: 2019-05-30 22:45:00 epoch: 1559220600 date_epoch_local: 2019-05-30 22:50:00 utcepoch: 1559219600 date_epoch_utc: 2019-05-30 12:50:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T12:50:00Z obsTimeLocal: 2019-05-30 22:50:00 Number of WU records: 275 Thu May 30 23:58:02 2019 UTC+10 epoch: 1559223900 date_epoch_local: 2019-05-30 23:45:00 utcepoch: 1559222900 date_epoch_utc: 2019-05-30 13:45:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T13:45:00Z obsTimeLocal: 2019-05-30 23:45:00 epoch: 1559224200 date_epoch_local: 2019-05-30 23:50:00 utcepoch: 1559223200 date_epoch_utc: 2019-05-30 13:50:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T13:50:00Z obsTimeLocal: 2019-05-30 23:50:00 Number of WU records: 287 10 hour period after midnight on May 31. Request is for May 30 data. Replies are May 31 data. Local Date is 1 day ahead of UTC date Fri May 31 00:02:02 2019 UTC+10 Could not get Weather Underground data. Reason: No JSON object could be decoded Could not get Weather Underground data. Exiting. Fri May 31 00:58:02 2019 UTC+10 epoch: 1559227500 date_epoch_local: 2019-05-31 00:45:00 utcepoch: 1559226500 date_epoch_utc: 2019-05-30 14:45:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T14:45:00Z obsTimeLocal: 2019-05-31 00:45:00 epoch: 1559227800 date_epoch_local: 2019-05-31 00:50:00 utcepoch: 1559226800 date_epoch_utc: 2019-05-30 14:50:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T14:50:00Z obsTimeLocal: 2019-05-31 00:50:00 Number of WU records: 11 Fri May 31 02:58:03 2019 UTC+10 epoch: 1559234700 date_epoch_local: 2019-05-31 02:45:00 utcepoch: 1559233700 date_epoch_utc: 2019-05-30 16:45:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T16:45:00Z obsTimeLocal: 2019-05-31 02:45:00 epoch: 1559235000 date_epoch_local: 2019-05-31 02:50:00 utcepoch: 1559234000 date_epoch_utc: 2019-05-30 16:50:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T16:50:00Z obsTimeLocal: 2019-05-31 02:50:00 Number of WU records: 35 Fri May 31 05:58:02 2019 UTC+10 epoch: 1559245500 date_epoch_local: 2019-05-31 05:45:00 utcepoch: 1559244500 date_epoch_utc: 2019-05-30 19:45:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T19:45:00Z obsTimeLocal: 2019-05-31 05:45:00 epoch: 1559245800 date_epoch_local: 2019-05-31 05:50:00 utcepoch: 1559244800 date_epoch_utc: 2019-05-30 19:50:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T19:50:00Z obsTimeLocal: 2019-05-31 05:50:00 Number of WU records: 71 Fri May 31 08:58:03 2019 UTC+10 epoch: 1559256300 date_epoch_local: 2019-05-31 08:45:00 utcepoch: 1559255300 date_epoch_utc: 2019-05-30 22:45:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T22:45:00Z obsTimeLocal: 2019-05-31 08:45:00 epoch: 1559256600 date_epoch_local: 2019-05-31 08:50:00 utcepoch: 1559255600 date_epoch_utc: 2019-05-30 22:50:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T22:50:00Z obsTimeLocal: 2019-05-31 08:50:00 Number of WU records: 107 Fri May 31 09:58:03 2019 UTC+10 epoch: 1559259900 date_epoch_local: 2019-05-31 09:45:00 utcepoch: 1559258900 date_epoch_utc: 2019-05-30 23:45:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T23:45:00Z obsTimeLocal: 2019-05-31 09:45:00 epoch: 1559260200 date_epoch_local: 2019-05-31 09:50:00 utcepoch: 1559259200 date_epoch_utc: 2019-05-30 23:50:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T23:50:00Z obsTimeLocal: 2019-05-31 09:50:00 Number of WU records: 119 After 10AM on May 31: Request is for May 30 data. Replies are May 30 data Local Date = UTC date. Fri May 31 10:02:02 2019 UTC+10 epoch: 1559224200 date_epoch_local: 2019-05-30 23:50:00 utcepoch: 1559223200 date_epoch_utc: 2019-05-30 13:50:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T13:50:00Z obsTimeLocal: 2019-05-30 23:50:00 epoch: 1559224500 date_epoch_local: 2019-05-30 23:55:00 utcepoch: 1559223500 date_epoch_utc: 2019-05-30 13:55:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T13:55:00Z obsTimeLocal: 2019-05-30 23:55:00 Number of WU records: 288 Fri May 31 11:02:02 2019 UTC+10 epoch: 1559224200 date_epoch_local: 2019-05-30 23:50:00 utcepoch: 1559223200 date_epoch_utc: 2019-05-30 13:50:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T13:50:00Z obsTimeLocal: 2019-05-30 23:50:00 epoch: 1559224500 date_epoch_local: 2019-05-30 23:55:00 utcepoch: 1559223500 date_epoch_utc: 2019-05-30 13:55:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T13:55:00Z obsTimeLocal: 2019-05-30 23:55:00 Number of WU records: 288 Fri May 31 12:02:03 2019 UTC+10 epoch: 1559224200 date_epoch_local: 2019-05-30 23:50:00 utcepoch: 1559223200 date_epoch_utc: 2019-05-30 13:50:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T13:50:00Z obsTimeLocal: 2019-05-30 23:50:00 epoch: 1559224500 date_epoch_local: 2019-05-30 23:55:00 utcepoch: 1559223500 date_epoch_utc: 2019-05-30 13:55:00 tz: Australia/Sydney obsTimeUtc: 2019-05-30T13:55:00Z obsTimeLocal: 2019-05-30 23:55:00 Number of WU records: 288 I think this is enough to describe definitively what happens in UTC+X timezones. Rod -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/3c37de20-e348-49c5-b767-b440ed4d228a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
