# observer longitude

drillable.com › aa-usno-navy-mil › easter › observer longitude.
As of the index built 10 Sep 2026, 00:38 UTC · [cites, never asserts](/standing).
Source: The Date of Easter, by https://aa.usno.navy.mil.
MCP https://mcp.drillable.com · [html](/e/aa-usno-navy-mil/easter/observer-longitude.html) · [markdown](/e/aa-usno-navy-mil/easter/observer-longitude.md) · [json](/e/aa-usno-navy-mil/easter/observer-longitude.json) · [discovery](/.well-known/drillable.json) · [guide](/llms.txt)

## Records (1)

By drillable.com ([llm-extract/1](/standing#methods)); scored precision 1.00, recall 0.34 on the harness's last sample of 35.

- **sign-convention** = added if east of Greenwich, subtracted if west of Greenwich · [quote](/r/sha256:5fb2f96353c2ac943f32662a18c2e14eee59e94595ae8c0304230300c4b28af9?trace&start=3902&end=4040) · [sha256:505e43d9f1879858…](/r/sha256:505e43d9f18798583d8411c021b33241fbed216985244d137fca8c8eee60f5d4)

Everything here is a record by a named reader, arranged; where readers disagree, both are shown.
No reader has asserted a label for it; the title is its address.

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