How do I calculate hours in Numbers?

How do I calculate hours in Numbers? Example: I inserts 7:00 in a cell and 11:30 in another cell. What function do I write to get 4:30?

Hi Interlaga,
Enter start time in A2. Enter finish time in B2. They will become Cell > Data Format > Automatic with Date and Time (Date None).
Formula in C2
=B2−A2
That becomes Cell > Data Format >Automatic
Refinement is to use 'Date and Time' Format for start and finish, and 'Duration' format for the difference.
Remember that in Numbers, every Date has a Time attached, and every Time has a Date attached (even if they are not displayed in the cell). So if you enter the times on different days (the 'crossing midnight' problem) the finish time will be 24 hours later .
It took me a while to understand this, but a Time or a Date is an instant since 1 January 1904.
Call back for more help.
Regards,
Ian.

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How do I calculate hours?

Hi,
I allow the user to enter a start time of "0200AM" and an end time of "0330AM". How do I calculate the hours? I tried calendar hours, but I wasn't quite sure how it worked.
Thanks

you use the Calendar.set() method to set the specific hour/minutue/am/pm, see the docs for details. then you can do a getTime() which returns a Date object for further manipulation.
thomas

How do I add hours in Numbers?

I created two columns with time I started working on a job and the time I ended. I would like the final column to add up the hours i worked. How do I do this?

maricusitin,
When you subtract a larger number from a smaller number, you will get a negative result. In this case, 1:30 pm is greater than 10:00 am, so you get -3h. If you subtract 10:00 am from 1:30 pm, you should get a positive difference.
Jerry

How can I calculate the Prime Numbers ?

Hi everyone ,
I want to learn how can I do this :
Write a Pl/SQL program using While loop , which will accept integer from 1 to 50 and generate the prime numbers as showen in the following output :
The prime numbers from 1 to 50 are as follows :
1,2,3,5,7,11,13,17,19,23,29,31,37,41,43,47

HanyFreedom is one of the oracle's teachers that I have asked him yesterday about this Question .. I just know him via the internet ..
now,
I'm keep trying to find out what is the right answer..
and this is my try :
Declare
counter number(10):=1;
j number (4);
begin
DBMS_output.put_line('The prime numbers from 1 to 50 are as follows ');
while counter < 50 loop
FOR j in 2..50 loop
if mod(counter,1)=0 and mod (counter,j)<>0 and mod(counter,2)<>0
then
dbms_output.put_line(counter);
end if;
counter:=counter+1;
end loop;
end loop;
end;
but there is something error because in the result i get number 49 which is not right
Message was edited by:
user635582

How do I calculate age (in numbers)

... just switched to Numbers, used to Excel...
I suspect it's got to do with Data Formats...
Please help!

I would direct you to existing thread on the subject.
https://discussions.apple.com/thread/1380192

Calculate changing wage rate pr hour in numbers

Calculate changing wage rate pr hour in numbers:
Hi I need some help calculating my salary. I get paid different wage rates every hour:
UGESATSER
Mandag
Tirsdag
Onsdag
Torsdag
Fredag
Lørdag
Søndag
1:00
163,72
163,72
163,72
163,72
163,72
163,72
225,97
2:00
163,72
163,72
163,72
163,72
163,72
163,72
225,97
3:00
163,72
163,72
163,72
163,72
163,72
163,72
225,97
4:00
163,72
163,72
163,72
163,72
163,72
163,72
225,97
5:00
163,72
163,72
163,72
163,72
163,72
163,72
225,97
6:00
163,72
163,72
163,72
163,72
163,72
163,72
225,97
7:00
124,50
124,50
124,50
124,50
124,50
124,50
186,75
8:00
124,50
124,50
124,50
124,50
124,50
124,50
186,75
9:00
124,50
124,50
124,50
124,50
124,50
124,50
186,75
10:00
124,50
124,50
124,50
124,50
124,50
124,50
186,75
11:00
124,50
124,50
124,50
124,50
124,50
159,36
186,75
12:00
124,50
124,50
124,50
124,50
124,50
159,36
186,75
13:00
124,50
124,50
124,50
124,50
124,50
159,36
186,75
14:00
124,50
124,50
124,50
124,50
124,50
159,36
186,75
15:00
124,50
124,50
124,50
124,50
124,50
159,36
186,75
16:00
124,50
124,50
124,50
124,50
124,50
159,36
186,75
17:00
124,50
124,50
124,50
124,50
124,50
159,36
186,75
18:00
159,36
159,36
159,36
159,36
159,36
194,22
221,61
19:00
159,36
159,36
159,36
159,36
159,36
194,22
221,61
20:00
159,36
159,36
159,36
159,36
159,36
194,22
221,61
21:00
159,36
159,36
159,36
159,36
159,36
194,22
221,61
22:00
159,36
159,36
159,36
159,36
159,36
194,22
221,61
23:00
159,36
159,36
159,36
159,36
159,36
194,22
221,61
0:00
163,72
163,72
163,72
163,72
163,72
198,58
225,97
How do i make a calculation that includes different rate pr. hour? It would be nice if i just need to put in the dates and time link this and than Numbers calculate my salary based on the different wage rates. Hope you can help. THANKS.
I have set up my numbers like this:
Start
Tid
lør. 10. januar 07.00
lør. 10. januar 23.00
16 timer
SALARY
søn. 11. januar 07.00
søn. 11. januar 23.00
16 timer
man. 12. januar 07.00
man. 12. januar 23.00
16 timer
ons. 14. januar 07.00
ons. 14. januar 23.00
16 timer
tor. 15. januar 07.00
tor. 15. januar 23.00
16 timer

No.
sheet 2 shows my working days from January. Fx.
lør. 10. januar 07.00
lør. 10. januar 23.00
16 timer
That is a Saturday which means that thies are the wage rates for each hour(sheet 1):
UGESATSER
Lørdag
1:00
163,72
2:00
163,72
3:00
163,72
4:00
163,72
5:00
163,72
6:00
163,72
7:00
124,50
8:00
124,50
9:00
124,50
10:00
124,50
11:00
159,36
12:00
159,36
13:00
159,36
14:00
159,36
15:00
159,36
16:00
159,36
17:00
159,36
18:00
194,22
19:00
194,22
20:00
194,22
21:00
194,22
22:00
194,22
23:00
194,22
0:00
198,58
This day my calculation should calculate this:
4 hr @ 124,50 (7-11)
7 hrs @ 159,36 (11-18)
5 hrs @ 194.22 (18-23)
0 hrs @ 198,58 (23-24)
Some times I work efter 00:00 fx. til 4 in the morning.
THANKS

How to calculate hours between two dateTime node in BPEL.

In my BPEL there's a requirement need calculate hours between two dateTime type..
I tried 2 solutions, both of them failed:
1. use xslt calculate duration(xml type, like PT12H) between two dateTime, and then use embedded java code to get the hours.. The problem is : I need to parse the xml duration format...(like this real one: -P80DT17H47M36S....), and to parse it in java , maybe have the same problem with solution 2..
* [Subtracting 2 dateTime values into a duration using XPath 2.0|http://blogs.oracle.com/rammenon/2007/07/subtracting_2_datetime_values.html]
2. use embed java code, but it seems we can't use some class in embedded java code:
my code(input begin, end both dateTime in xml. output: diff, int in xml):
1 System.out.println("\n\nTimeTestBegin");
2 String begin=getVariableData("begin").toString();
3 String end=getVariableData("end").toString();
4 System.out.println(begin+"-----"+end);
5 //Class c1=Class.forName("javax.xml.datatype.XMLGregorianCalendar");
6 //Class c2=Class.forName("javax.xml.datatype.DatatypeFactory");
7 //System.out.println(c1.getName());
8 //System.out.println(c2.getName());
9 javax.xml.datatype.XMLGregorianCalendar beginTime = javax.xml.datatype.DatatypeFactory.newInstance().newXMLGregorianCalendar(begin);
10 javax.xml.datatype.XMLGregorianCalendar endTime = javax.xml.datatype.DatatypeFactory.newInstance().newXMLGregorianCalendar(end);
11 long diff=beginTime.toGregorianCalendar().getTimeInMillis()-endTime.toGregorianCalendar().getTimeInMillis();
12 setVariableData("diff",String.valueOf(diff/1000/3600));
13 System.out.println("DIFF======"+diff/1000/3600);
14 System.out.println("TimeTestEnd");
it's said can't compile java class, but can't find the detail error, I think the problem is how to import java class to embedded java code activity(use full package name like above code don't work), when I remove line 9-13, no compile error..
BTY: Jdeveloper is a IDE support java, but why the embedded java activity's edit window only have a simple "java code" editor, too simple that it can only edit you code snippet...
3.There's another sulotion: extend BPEL xpath functions(add a new function), but in my project, modify BPEL server(soa server)'s config file is not allowed..
Anyone know easy solution to my problem?
Thanks.

Hi, All,
I found the cause. Sorry, it's my mistake..
below line have a DatatypeConfigurationException:
javax.xml.datatype.DatatypeFactory.newInstance()
When I test my java code snippet, I coped the code snippet to one of my java class in eclipse, and put it in a method to check if there's compile error, but I didn't notice there's a "throws Exception"...
the final java code snippet for test is :
input: begin dateTime
input: end dateTime
output: diff int, how many hours in (begin-end)
try{
System.out.println("\n\nTimeTestBegin");
String begin=getVariableData("begin").toString();
String end=getVariableData("end").toString();
System.out.println(begin+"-----"+end);
javax.xml.datatype.XMLGregorianCalendar beginTime = javax.xml.datatype.DatatypeFactory.newInstance().newXMLGregorianCalendar(begin);
javax.xml.datatype.XMLGregorianCalendar endTime = javax.xml.datatype.DatatypeFactory.newInstance().newXMLGregorianCalendar(end);
long diff=beginTime.toGregorianCalendar().getTimeInMillis()-endTime.toGregorianCalendar().getTimeInMillis();
setVariableData("diff",String.valueOf(diff/1000/3600));
System.out.println("DIFF======"+diff/1000/3600);
System.out.println("TimeTestEnd");
}catch(Exception e){
e.printStackTrace();
}

How can i calculate overtime hours with PCR?

hi all,
i was wandering, can i calculate overtime hours in this case?
example my DWS for this day is 08.00 - 16.00
i do early overtime from 06.00 - 08.00, and after my working hours is finished, i do late overtime from 16.00 - 19.00
(in TIP it is separated in 2 rows)
how can i calculate my total overtime with pcr? i want to use the total for another calculation..
06.00 - 08.00 : 2 hours
16.00 - 19.00 : 3 hours
+
        total      : 5 hours.
thx all..

ZPRN    DVARSTPRSNT
N      COLOP*
Y     DOUTTPORIGS
Y E HRS=0     HRS=PNUM ADDDB9066 COLOP*
Y * COLOP*
THE ZPRN PCR WILL GET THE TOTAL NUMBER WORKING HRS IN TIME TYPE 9066
Now we will write a pcr to get overtime details
      DVARSTDPRCL
*    DVARSTHOLCL
* 1 D HRS=D9066 HRS-S HRS?0
* 1 * ADDDB9067
* 1 < COLOP*
0 *
NOW THIS PCR WILL BRING THE OVERTIME
BASED ON YOUR DAILY WORK SCHEDULES U NEED TO CHANGE VARSTDPRCL NOW MY RULES WILL WORK FOR ALL THE SHIFTS OTHER THAN WEEKLY OFFS
REGARDS,
RAJA SEKHAR.

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This may help:
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Example:
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Hello
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How do I calculate hours in Numbers?

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