Convert Decimal Time to human readable format using JavaScript

Question

I have a web service that returns the current time in Decimal format. How I can convert it to a human-readable format using JavaScript.

Here is what documentation says. The web service returns dates and times as floating-point values. The fraction represents the time (0.5 is noon).

e.g.

 0.5 is 12:00 

 0.681944 is 16:22

This is elementary school level math. What have you tried? – Teemu Apr 07 '20 at 07:50 — Teemu, Apr 07 '20 at 07:50

Radu Diță · Answer 1 · 2020-04-07T08:49:33.230

2

Convert the decimal representation to seconds in a day

const seconds = decimalData * 60 * 60 * 24

Take the reminder of 60 to the the seconds

const sec = decimalData % 60

Take the reminder of 3600 as the minutes divided by 60

const minutes = Math.floor((second % 3600) / 60)

Find the hour by div with 3600

const hours = Math.floor(seconds / 3600)

Now you just have to convert it to a string.

const formatted = hours.toString().padStart(2, '0') + ":" + minutes.toString().padStart(2, '0') + ":" + sec.toString().padStart(2, '0')

edited Apr 07 '20 at 08:49

answered Apr 07 '20 at 07:54

Radu Diță

Thanks, @Radu Dita; can you please add the seconds part as well. How the seconds will be calculated in formated constant. – Abdul Waheed Apr 07 '20 at 08:46
Dita maybe a bit off to the actual question. Is this possible to get the current system time in Decimal format? The same format in which I get the time from web service. I actually want to calculate the time difference in seconds between (current-system-time - web-service-time). – Abdul Waheed Apr 07 '20 at 12:06
Yes, you can, but you should post another question regarding this. – Radu Diță Apr 07 '20 at 12:11
Dita could you please answer here; https://stackoverflow.com/questions/61081381/how-to-get-current-time-in-seconds-decimal-using-javascript – Abdul Waheed Apr 07 '20 at 13:41

1 Answers1