validate current timestamp between given start and end date times

Don't worry dude we have another one way

Time Difference =
var Start_Date = NOW()  -- Replace Now() with start_date 
var end_Date = NOW()    -- Replace Now() with end_date 

var Start_time = FORMAT(Start_Date,"HH:mm:ss")
var End_time = FORMAT(end_Date,"HH:mm:ss")

return FORMAT( TIME(LEFT(Start_time,2) ,MID(Start_time,4,2),RIGHT(Start_time,2)) -
TIME(LEFT(End_time,2) ,MID(End_time,4,2),RIGHT(End_time,2)) , "HH:mm:ss"
)

I hope it will give u the time difference dude..

let me know any further doubts . cheers