Date range not working properly

For this exemple, use START DATE and END DATE

START DATE : 2009-11-01 END DATE : 2010-10-01

Date format => YYYY-MM-DD

https://danfo.jsdata.org/api-reference/series/series.dt.day

Code like in documentation :

let dataDays = new dfd.date_range({"start": startDate, "end":endDate}); console.log("### DAYS BETWEEN DATES WITH DANFO DATE RANGE : ", dataDays.length);

Code result is bad => 364

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expected Result => 335

try with this url => https://www.timeanddate.com/date/durationresult.html?d1=1&m1=11&y1=2009&d2=1&m2=10&y2=2010&ti=on

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Proof with date-fns

`const { addDays, addMonths, differenceInDays, differenceInMonths } = require(‘date-fns’);

const dateRange = function (startDate, endDate, interval) { // D = Days if (interval === ‘D’) { const days = differenceInDays(endDate, startDate); return […Array(days+1).keys()].map((i) => addDays(startDate, i)); } // M = Months if (interval === ‘M’) { const months = differenceInMonths(endDate, startDate); return […Array(months+1).keys()].map((i) => addMonths(startDate, i)); } }

let daysBetweenDates = dateRange(new Date(startDate), new Date(endDate), ‘D’); console.log(‘### DAYS BETWEEN DATES WITH CUSTOM DATE RANGE :’, daysBetweenDates.length); `

Code result ok => 335

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Thank’s for your help 😃

[nicolashedoire]

@steveoni What do you think?

Yes it’s a good idea ! Dates are always a problem in programming …

[steveoni]

@nicolashedoire issue now fixed in #139