{"id":28629765,"url":"https://github.com/codebox/star-rise-and-set-times","last_synced_at":"2025-07-05T11:32:45.705Z","repository":{"id":57369475,"uuid":"158854202","full_name":"codebox/star-rise-and-set-times","owner":"codebox","description":"A browser-based tool for calculating the rising and setting times of stars","archived":false,"fork":false,"pushed_at":"2018-12-22T18:26:15.000Z","size":183,"stargazers_count":9,"open_issues_count":0,"forks_count":0,"subscribers_count":3,"default_branch":"master","last_synced_at":"2025-05-22T16:35:29.644Z","etag":null,"topics":["astronomy","javascript"],"latest_commit_sha":null,"homepage":"https://codebox.net/pages/star-rise-and-set-time-calculator","language":"JavaScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/codebox.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2018-11-23T16:12:32.000Z","updated_at":"2023-07-05T18:23:37.000Z","dependencies_parsed_at":"2022-08-26T04:51:48.342Z","dependency_job_id":null,"html_url":"https://github.com/codebox/star-rise-and-set-times","commit_stats":null,"previous_names":[],"tags_count":1,"template":false,"template_full_name":null,"purl":"pkg:github/codebox/star-rise-and-set-times","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/codebox%2Fstar-rise-and-set-times","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/codebox%2Fstar-rise-and-set-times/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/codebox%2Fstar-rise-and-set-times/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/codebox%2Fstar-rise-and-set-times/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/codebox","download_url":"https://codeload.github.com/codebox/star-rise-and-set-times/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/codebox%2Fstar-rise-and-set-times/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":259462578,"owners_count":22861514,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["astronomy","javascript"],"created_at":"2025-06-12T12:13:31.127Z","updated_at":"2025-06-12T12:13:31.770Z","avatar_url":"https://github.com/codebox.png","language":"JavaScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"# star-rise-and-set-times\n\nHere is a browser-based tool for calculating the rising and setting times of stars. You can [try it online here](https://codebox.net/pages/star-rise-and-set-time-calculator).\n\n\u003cimg alt=\"star rise and set calculator screenshot\" src=\"./screenshot.png\" width=\"600\"\u003e\n\nThe code is based on formulae [from](https://idlastro.gsfc.nasa.gov/ftp/pro/astro/hadec2altaz.pro) [various](http://aa.usno.navy.mil/faq/docs/GAST.php) [sources](https://astronomy.stackexchange.com/a/14508/24882) with much credit to [Barry Carter](http://wordpress.barrycarter.info) for his help and patience.\n\nThis tool does not take into account atmospheric refraction, which can affect rising/setting times by several minutes - if you need that kind of accuracy then see [this page from the US Naval Observatory](https://aa.usno.navy.mil/data/docs/mrst.php). The results [have been checked](https://github.com/codebox/star-rise-and-set-times/blob/master/test/spec/calc-spec.js) against various  [other](https://aa.usno.navy.mil/data/docs/mrst.php) [online](https://www.wolframalpha.com/) [tools](https://in-the-sky.org/), written by people far more competent than me, and they broadly agree, although each tool gives slightly different answers. It is probably safe to assume accuracy to within \u0026plusmn;10 minutes.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcodebox%2Fstar-rise-and-set-times","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fcodebox%2Fstar-rise-and-set-times","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcodebox%2Fstar-rise-and-set-times/lists"}