# Difference between 2 DateTime fields in Hours and Minutes with timezones

I am having trouble in finding the difference between 2 datetime variables and reducing the offset timezone difference in order to get the local time from the salesforce generated GMT time. I have a requirement to find the difference between 2 datetime field in terms of hours and minutes. My time zone is EST and sometimes i was asked to calculate for CST as well, how can this be done?

• Hey Ajay, asking and answering your own question is ok, but I changed the phrasing a little so it sounded a little more natural! Sep 22, 2014 at 11:50
• Yeah , I got your point . I din take care of the phrasing . Thanks for rephrasing it !! Sep 22, 2014 at 11:51

## 3 Answers

Here is what i did, I created a formula field `"DateNow__c".` In this formula field keep this as datetime field. In order to get EST or CST time zones here you have to find out the time differences in terms of hours. For example, EST time difference would be 4 hours , so i simply made DateNow__c as `"NOW()-0.1667"` where 0.1667 = 4/24 Similarly for CST, DateNow__c as `"NOW()-0.2083"` where 0.2083 is 5/24. From this timings i get my local time zones value,

Why i did this is because When i used something like this "`TEXT((NOW()-0.2083) - LastModifiedDate)`" did not give me the desired output.

Step 2: Now to determine the diff in hours and minutes. Normally difference will give some decimal values like 5.52 where 5 is the no. of days , 0.5 in terms of hours and 0.02 in terms of minutes. The below formula will give me the difference in hours and minutes. For example, Date A is 9/22/2014 5:40 AM and Date B is 9/22/2014 8:00 AM My result will be : 2.20 where 2 is the hours and .20 is the minutes. For example, Date A is 9/21/2014 5:40 AM and Date B is 9/22/2014 8:00 AM My result will be : 26.20 where 26 is the hours and .20 is the minutes. (even day wil be converted to hours)

``````(FLOOR(( DateNow__c - SomeDatetime__c)*24))
+
ROUND((((
((DateNow__c - SomeDatetime__c)*24)-
FLOOR((DateNow__c - SomeDatetime__c)*24))
*60)/100),2)
``````

here FLOOR(..) - will give me the hours. ROUND(..,2) will give me the minutes in 2 decimal places. Hope this will do good to you in some way.

Please have a look at moment.js which is a great production grade library for all date related operations. I have used it extensively in performing this operation. The only downside to this is that it can only be used on client side code, visual force pages etc.

First Solution

``````  First Calculate Minutes between two dates. Then convert hours and minutes . using formula field

Calculate Minutes Formula

( Second_Date__c - Frist_Date__C )*24*60

Convert Minutes in Hours

TEXT(FLOOR( Duration__c / 60))
&' Hours '&
TEXT(MOD( Duration__c ,60))
&' Minutes'
``````

Second Solution Use Formula Field And Use Return Type is Text

``````             IF(FLOOR(MOD((First_Date_Time_c- Second_Date_Time_c )* 24, 24 )) > 0,

TEXT(FLOOR(MOD((First_Date_Time_c- Second_Date_Time_c )* 24, 24 ))) & " Hours ","")

& TEXT(ROUND(MOD((First_Date_Time_c- Second_Date_Time_c )* 24 * 60, 60 ), 0))

& " Minutes "
``````
• Hello Vishal, welcome to SFSE. Reading your answer I could not identify where it addressed the timezone component as the question asked, could you please update your answer to clarify that? Oct 11, 2021 at 14:21
• Your answer could be improved with additional supporting information. Please edit to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers in the help center.
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Oct 11, 2021 at 14:31