import "day";

import "interval";

import "time";

import "year";

d3_time_daySymbols.forEach(function(day, i) {

day = day.toLowerCase();

i = 7 - i;

var interval = d3.time[day] = d3_time_interval(function(date) {

(date = d3.time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);

return date;

}, function(date, offset) {

date.setDate(date.getDate() + Math.floor(offset) * 7);

}, function(date) {

var day = d3.time.year(date).getDay();

return Math.floor((d3.time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);

});

d3.time[day + "s"] = interval.range;

d3.time[day + "s"].utc = interval.utc.range;

d3.time[day + "OfYear"] = function(date) {

var day = d3.time.year(date).getDay();

return Math.floor((d3.time.dayOfYear(date) + (day + i) % 7) / 7);

};

});

d3.time.week = d3.time.sunday;

d3.time.weeks = d3.time.sunday.range;

d3.time.weeks.utc = d3.time.sunday.utc.range;

d3.time.weekOfYear = d3.time.sundayOfYear;