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fix: ensure isformat does not truncate 0Z #535

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Merged
merged 2 commits into from
Nov 25, 2025
Merged

fix: ensure isformat does not truncate 0Z #535

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ebcdc08
fix: ensure isformat does not truncate 0Z
Nov 21, 2025
5f56e5c
docs: updated changelog
Nov 21, 2025
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2 changes: 2 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -16,6 +16,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.

### Fixed

- Fixed datetime filtering for .0Z milliseconds to preserve precision in apply_filter_datetime, ensuring only items exactly within the specified range are returned. [#535](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/535)

### Removed

### Updated
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5 changes: 4 additions & 1 deletion stac_fastapi/core/stac_fastapi/core/datetime_utils.py
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Expand Up @@ -32,7 +32,10 @@ def normalize(dt):
dt_utc = MIN_DATE_NANOS
if dt_utc > MAX_DATE_NANOS:
dt_utc = MAX_DATE_NANOS
return dt_utc.isoformat(timespec="auto").replace("+00:00", "Z")
dt_normalized = dt_utc.isoformat(timespec="auto").replace("+00:00", "Z")
if "." not in dt_normalized:
dt_normalized = dt_normalized.replace("Z", ".0Z")
return dt_normalized

if not isinstance(date_str, str):
return f"{MIN_DATE_NANOS.isoformat(timespec='auto').replace('+00:00','Z')}/{MAX_DATE_NANOS.isoformat(timespec='auto').replace('+00:00','Z')}"
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