Minute Scheduling for Every 59 minutes is giving incorrect future schdules

[yas1th]

var gt = later.parse.cron('0/50 * 1/1 * ? ');
var local = new Date("2018-1-29 11:45");
var curDate = new Date();
local.setMinutes(local.getMinutes() - local.getTimezoneOffset());
curDate.setMinutes(curDate.getMinutes() - curDate.getTimezoneOffset());
var arrNextMatchingSchedules = later.schedule(gt).next(5, local, new Date(2099, 12, 31));
console.log(arrNextMatchingSchedules);

I am recieving the results as shown below which is not expected.

Mon Jan 29 2018 17:20:00 GMT+0530 (India Standard Time),
Mon Jan 29 2018 17:30:00 GMT+0530 (India Standard Time),
Mon Jan 29 2018 18:20:00 GMT+0530 (India Standard Time),
Mon Jan 29 2018 18:30:00 GMT+0530 (India Standard Time),
Mon Jan 29 2018 19:20:00 GMT+0530 (India Standard Time

This is one of the scenarios which i am posting here but i have observed couple of scenarios in case of minutes where it is not as per expectation.
I have gone through later.js code and debugged but since there were no comments i am unable to understand what is happening?

later.minutes function is having range variable for 60 and it returns a schedules array by splitiing the cron expression . suppose if i give 50 minutes it will set 50 minutes to one schedule and other 10 minutes which 60-50 as other one and again it resets it.

please help me to extend this logic for the above mentioned scenario.

[yas1th]

I have fixed the above issue by enhancing the later js code . I have added nextMinSchedules function to solve the above posted issue.