compute fuzzy local time from a location
npm install @mapbox/timespaceTimezone data is from https://github.com/evansiroky/timezone-boundary-builder/.
npm install @mapbox/timespace
`Test
`
npm run test
`Use
$3
`js
var ts = require('@mapbox/timespace');var timestamp = Date.now();
var point = [-122.27783203125, 37.84015683604136];
var time = ts.getFuzzyLocalTimeFromPoint(timestamp, point);
//=> (a
moment-timezone object – see https://momentjs.com/timezone/)
var tile = [41, 98, 8]; // the tile [x, y, z] whose timezone we want to know
var timezone1 = ts.getFuzzyTimezoneFromTile(tile);
//=> 'America/Los_Angeles'
var quadkey = '02301021'; // the quadkey whose timezone we want to know
var timezone2 = ts.getFuzzyTimezoneFromQuadkey(quadkey);
//=> 'America/Los_Angeles'
`./lib/timezones.json file contains the timezone name of every z8 tile that contains land.
If a tile/quadkey with zoom levels > 8 is passed into timespace functions, the timezone of its z8 parent is returned.
If a tile/quadkey with zoom levels < 8 is passed into timespace functions, the most popular timezone amongst its z8 children is returned.
Regenerate timezones.json
To update timezone.json,
1. find the link address of the latest timezones.shapefile.zip release from https://github.com/evansiroky/timezone-boundary-builder/releases,
2. replace the link address in this line with the the link from step 1
3. run
npm run regenerate
4. run npm run test to verify the new timezones.json file is ok
To generate timezone.json for another zoom level:
1. change the number in this line to the desired zoom level,
2. run
npm run regenerate
3. run npm run test` to verify the new timezones.json file is ok