Python program to find difference between current time and given time

Given two times h1:m1 and h2:m2 denoting hours and minutes in 24 hours clock format. The current clock time is given by h1:m1. The task is to calculate the difference between two times in minutes and print the difference between two times in h:m format.

Examples:

Input : h1=7, m1=20, h2=9, m2=45
Output : 2 : 25
The current time is 7 : 20 and given time is 9 : 45.
The difference between them is 145 minutes.
The result is 2 : 25 after converting to h : m format.

Input : h1=15, m1=23, h2=18, m2=54
Output : 3 : 31
The current time is 15 : 23 and given time is 18 : 54.
The difference between them is 211 minutes.
The result is 3 : 31 after converting to h : m format.

Input : h1=16, m1=20, h2=16, m2=20
Output : Both times are same
The current time is 16 : 20 and given time is also 16 : 20.
The difference between them is 0 minutes.
As the difference is 0, we are printing “Both are same times”.

Approach:

convert both the times into minutes
find the difference in minutes
if difference is 0, print “Both are same times”
else convert difference into h : m format and print

Below is the implementation.

# Python program to find the 
# difference between two times 
  
  
# function to obtain the time 
# in minutes form 
def difference(h1, m1, h2, m2): 
      
    # convert h1 : m1 into 
    # minutes 
    t1 = h1 * 60 + m1 
      
    # convert h2 : m2 into 
    # minutes  
    t2 = h2 * 60 + m2 
      
    if (t1 == t2):  
        print("Both are same times") 
        return 
    else: 
          
        # calculating the difference 
        diff = t2-t1 
          
    # calculating hours from 
    # difference 
    h = (int(diff / 60)) % 24
      
    # calculating minutes from  
    # difference 
    m = diff % 60
  
    print(h, ":", m) 
  
# Driver's code 
if __name__ == "__main__": 
      
    difference(7, 20, 9, 45) 
    difference(15, 23, 18, 54) 
    difference(16, 20, 16, 20) 
  
# This code is contributed by SrujayReddy 

Output:

2 : 25
3 : 31
Both are same times

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