history/period API calls use wrong date (2 days back instead of 1) with days_previous: 1

[farscape12]

Title: history/period API calls use wrong date (2 days back instead of 1) with days_previous: 1

Predbat version: v8.47.5
Installation type: Home Assistant OS add-on (Standalone Predbat)
Home Assistant Core timezone: Europe/Amsterdam
apps.yaml timezone setting: Europe/Brussels

Description:

Predbat is repeatedly failing to fetch history for all configured sensors
(EcoFlow, P1 meter, Tibber price sensor, etc.) with 404 errors from the
Supervisor history API. On inspection, the requested date in the URL is
consistently 2 days in the past relative to the actual current date,
rather than 1 day (as configured via days_previous: 1).

Example: on 2026-08-08, Predbat requests:
http://supervisor/core/api/history/period/2026-08-06T09:02:04...

Expected: 2026-08-07 (yesterday), not 2026-08-06 (two days ago).

Relevant apps.yaml settings:

timezone: Europe/Brussels
days_previous: 1
days_to_compute: 1
fetch_history: false
set_read_history: false
set_read_history_load: false



	•	Confirmed all referenced sensors exist and have valid current values
(checked via Developer Tools > States)
	•	Confirmed disk space is not an issue (17.9GB free of 28.5GB)
	•	Confirmed Home Assistant Core logs show no Recorder/database errors
around the same timestamps
	•	Corrected an unrelated regional settings issue (unit system was set to
Fahrenheit/US instead of Celsius/Metric) — restarted Core and Predbat
after this change, but the date offset persisted unchanged
	•	Confirmed Supervisor addon timezone (Europe/Amsterdam) and apps.yaml
timezone (Europe/Brussels) are both correctly configured for the
Netherlands/Belgium region (UTC+1/+2), so this doesn’t appear to be a
simple timezone mismatch

Question: Is this a known issue with how days_previous is calculated,
possibly related to a timezone/DST offset calculation bug? Happy to
provide the full debug log (predbat_debug.yaml) if useful.

[gcoan]

please raise this on the predbat github (not the addon github) and include your full apps.yaml and logfile, and details of the sensor history

it seems strange that you are getting 404 errors from retrieving history, I've never heard of anyone getting that before, so suggests some configuration issue at its heart

Some of your apps.yaml contains invalid entries, e.g.

days_to_compute: 1
fetch_history: false
set_read_history: false
set_read_history_load: false

are not entries that predbat recognises, so if you have used AI to help write your apps.yaml then this may also be a contributing factor

[farscape12]

Claude heeft de setup gedaan was er een week mee bezig om het werkend te krijgen. Heb het op gegeven terug naar een simpele automatisering in homeassisant. Om me EcoFlow stream ultra x en delta Max 2 met extra batterij aan te sturen. Groetjes Marco Op ma 10 aug 2026 om 16:13 schreef Geoffrey Coan ***@***.***>

…

*gcoan* left a comment (springfall2008/predbat_addon#120) <#120 (comment)> please raise this on the predbat github (not the addon github) and include your full apps.yaml and logfile, and details of the sensor history it seems strange that you are getting 404 errors from retrieving history, I've never heard of anyone getting that before, so suggests some configuration issue at its heart Some of your apps.yaml contains invalid entries, e.g. days_to_compute: 1 fetch_history: false set_read_history: false set_read_history_load: false are not entries that predbat recognises, so if you have used AI to help write your apps.yaml then this may also be a contributing factor — Reply to this email directly, view it on GitHub <#120?email_source=notifications&email_token=BVRECKHFFDS4KXTQFUN3KAL5JHJ7PA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTKMRUGE2DIOJUHAZ2M4TFMFZW63VGMF2XI2DPOKSWK5TFNZ2KYZTPN52GK4S7MNWGSY3L#issuecomment-5241449483>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BVRECKGUEZFBUCZWRIFOEAT5JHJ7PAVCNFSNUABFKJSXA33TNF2G64TZHM4DANJYGQ2TGNRZHNEXG43VMU5TKMBZGYZTONRWGE4KC5QC> . Triage notifications, keep track of coding agent tasks and review pull requests on the go with GitHub Mobile for iOS <https://github.com/notifications/mobile/ios/BVRECKC35UFA4NTVIJL43J35JHJ7PA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTKMRUGE2DIOJUHAZ2M4TFMFZW63VGMF2XI2DPOKSWK5TFNZ2KUZTPN52GK4S7NFXXG> and Android <https://github.com/notifications/mobile/android/BVRECKGHMDV25EH2DAL5JN35JHJ7PA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTKMRUGE2DIOJUHAZ2M4TFMFZW63VGMF2XI2DPOKSWK5TFNZ2K4ZTPN52GK4S7MFXGI4TPNFSA>. Download it today! You are receiving this because you authored the thread.Message ID: ***@***.***>