How can I convert minecraft long time to real hours and minutes?

Hello,

I need to get the hours and minutes from the minecraft long time (loc.getWorld().getTime()).
How can this be done?

Thanks,
Reece

 

From Bukkit Javadoc

hours = Math.floor(time/1000)
minutes = (time % 1000) / 1000 * 60

... I would say

 

Your method for returning the hours is working, thanks. However, your method for returning the minutes doesn't work.

 

Code:java

long time = 13250L;
int hours = (int) Math.floor(time / 1000);
int minutes = (int) ((time % 1000) / 1000.0 * 60);
 
System.out.println(time + " as rl-time is " + hours + ":" + minutes);

Prints: "13250 as rl-time is 13:15"

I made a floating point value out of one of the 1000's (-> 1000.0) so that java is working with floats here and not int/long.
See: Java: Dividing 2 int's makes an int?

 

His method is mathematically correct. You must be doing something wrong.

 

PS: You may want to Math.floor() the minutes, too. To explain why the calculation didn't worked for you I just added a link above: Java: Dividing 2 int's makes an int?

 

Thanks, got it working!

 

You can use a Calendar to do it, this is the method I always use:

Code:

static Calendar cal = new GregorianCalendar();
 
public static String convertLongToDate(long time){
cal.setTimeInMillis(time);
return cal.getTime().toString();
}

You can also get the hours, minutes, etc. from this...

You do:

Code:

cal.get(Calendar.HOUR_OF_DAY);

EDIT:

Just realized you want MineCraft time, not real world time. But this calendar thing is pretty cool too if you ever need it ;P

 

Here is my procedure

Code:java

public String timeToString(long time) {
        int hours = (int) ((time / 1000 + 8) % 24);
        int minutes = (int) (60 * (time % 1000) / 1000);
        return String.format("%02d:%02d", hours, minutes);
}

 

To explain what fromgate does here: He shifts the time by eight hours forward, because, as you may already noticed, the world-time zero (0) is somewhere around sunrise and not exactly at midnight. I don't know where he got that number (8h) from, but it could fit pretty well (Thumbs up). Notice that not using floor() on this shifts the time a little bit further.
Additionally he arranged the minutes-calculation in a way that the usage of floating point values is superfluous.

Where do you got the interval from, fromgate?

• Looking at your code it seems like the clock will jump from 0:29 to 1:30, could that be?
• Not using floor() on the calculation of minutes allows the value '60' to appear, which would be the next hour. But I have the same problem with my code as I already hinted at.

EvilPeanut, this could help you, too: Minecraft Wiki - Day-night cycle

Plus let me implement the issues mentioned, I'll stick to the style of fromgate's function:

Code:java

public String timeToString(long time) {
    int hours = (int) ((Math.floor(time / 1000.0) + 8) % 24); // '8' is the offset
    int minutes = (int) Math.floor((time % 1000) / 1000.0 * 60);
    return String.format("%02d:%02d", hours, minutes);
}