${d.toLocaleDateString()}

2a:null 2b:["$","title",null,{"children":"Phases of the Moon | Justin Gosses | Observable"}] 30:[] 2e:{"id":"e4872fb1ff8bc45e","slug":"phases-of-the-moon","title":"Phases of the Moon","thumbnail":"552ba01fe8d7c6a4408f3bee4b17f308c40969619ba96f4873fe035a34e7cf5e","access_level":"public","create_time":"$D2018-12-19T19:28:18.944Z","update_time":"$D2018-12-19T19:28:18.944Z","view_time":null,"first_public_time":"$D2019-02-18T19:23:10.713Z","fork":{"id":"d023ca6992ad3177","slug":"phases-of-the-moon","title":"Phases of the Moon","owner":{"id":"8c2e47252fd4995c","login":"mbostock","name":"Mike Bostock"}},"stars":0,"starred":false,"owner":{"type":"team","id":"3168f49a68f07e98","login":"justingosses","name":"Justin Gosses","avatar_url":"https://avatars-next.observableusercontent.com/eba66f9b9de3134c0c22c453a1d562b450a8cf7f2274c4ed1ff16b7455312520","tier":"starter_2024"},"version":417,"publish_version":417,"role":null,"authored":false,"authors":[{"type":"individual","id":"44bc5e36abcab180","login":"justingosses","name":"Justin Gosses","avatar_url":"https://avatars-next.observableusercontent.com/eba66f9b9de3134c0c22c453a1d562b450a8cf7f2274c4ed1ff16b7455312520","tier":null}],"members":[{"type":"individual","id":"44bc5e36abcab180","login":"justingosses","name":"Justin Gosses","avatar_url":"https://avatars-next.observableusercontent.com/eba66f9b9de3134c0c22c453a1d562b450a8cf7f2274c4ed1ff16b7455312520","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"subscribed":null,"forks":1,"collection":{"id":"b7c4119163229a19","slug":"nasa","title":"NASA (mostly forks so go to original)","owner":{"id":"3168f49a68f07e98","login":"justingosses","name":"Justin Gosses"}},"type":"notebook","body":{"title":"Phases of the Moon","cells":[{"id":0,"value":"md`# Phases of the Moon\n\nFor the year ${year}, in the style of [Irwin Glusker](https://www.moma.org/explore/inside_out/2012/10/16/a-paean-to-the-phases-of-the-moon/).`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":4,"value":"chart = html`\n \n ${months.map(d => {\n const formatMonth = d3.timeFormat(\"%B\");\n return svg`\n ${formatMonth(d)}\n `;\n })}\n \n \n ${days.map(d => {\n const noon = d3.timeHour.offset(d, 12);\n const illum = suncalc.getMoonIllumination(noon);\n const angle = 180 - illum.phase * 360;\n return svg`\n \n ${d.getDate()}\n \n ${d.toLocaleDateString()}\n `;\n })}\n \n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":244,"value":"DOM.download(await serialize(chart))","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":78,"value":"viewof year = html``","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":140,"value":"projection = d3.geoOrthographic()\n .translate([0, 0])\n .scale(10)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":145,"value":"path = d3.geoPath(projection)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":142,"value":"hemisphere = d3.geoCircle()()","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":23,"value":"dayScale = {\n const scale = d3.scalePoint()\n .domain(d3.range(1, 40))\n .range([margin.left, width - margin.right])\n .padding(1);\n return d => {\n const start = d3.timeMonth(d);\n const offset = start.getDay() || 7;\n return scale(d.getDate() + offset);\n };\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":36,"value":"monthScale = {\n const scale = d3.scalePoint()\n .domain(d3.range(12))\n .range([margin.top, height - margin.bottom])\n .padding(1);\n return d => scale(d.getMonth());\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":10,"value":"days = {\n const now = new Date(year, 0, 1);\n const start = d3.timeYear(now);\n return d3.timeDays(start, d3.timeYear.offset(start, 1));\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":352,"value":"months = {\n const now = new Date(year, 0, 1);\n const start = d3.timeYear(now);\n return d3.timeMonths(start, d3.timeYear.offset(start, 1));\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":16,"value":"width = 964","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":18,"value":"height = 480","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":347,"value":"margin = ({top: 0, right: 0, bottom: 0, left: 60})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":125,"value":"suncalc = require(\"suncalc@1\")","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":13,"value":"d3 = require(\"d3@5\")","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":241,"value":"import {serialize} from \"@mbostock/saving-svg\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"}],"files":"$W30","stdlib":"1","titling":"auto"}} 2f:"$2e:body"