..... so does this just simplify to the fact that in the api the date is taken as being the UTC date? ie if one requests data for 20190529, and timezone is +3 you get back data for UTC00:00 29 may to 23:59 29 may which is 03:00 29 may local to 23:59 29 may local AND 00:00 30 may local - 02:59 30 may local
so to get the data for 29 may local it would be necessary to 1. get data for utc 28 may and discard utc 00:00 - 20:59 2. get data for utc 29 may and discard utc 21:00 - 23:59 or have i not understood correctly? On Friday, 31 May 2019 05:48:09 UTC+3, Rod Yager wrote: > > > 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. 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