Calculating the business differences in sql in the form of day, hours and minutes - SQL Server - date

Question

With the below function I getting the result as 00:09:10 however I want the result to be as 01:00:10.
So hours is considered as considered as 1 day.
Example if hours is 30 then it will be 03:03:00 and so on
fn_GetHolidayMinutes : Get holiday in minutes between two dates and country
CREATE FUNCTION [dbo].[fn_GetHolidayMinutes]
(#StartDate DATETIME,
#EndDate DATETIME,
#CountryId BIGINT)
RETURNS BIGINT
AS
BEGIN
DECLARE #OUTPUT BIGINT;
DECLARE #HolidayList TABLE (HolidaysDate DATE)
-- Create Table #HolidayList
-- (
-- HolidaysDate date
-- )
DECLARE #Date1 DATE, #Date2 DATE
DECLARE holiday_cursor CURSOR FOR
SELECT StartDate,EndDate
FROM Holidays
WHERE IsActive = 1
AND CountryId = #CountryId
AND ((StartDate BETWEEN #StartDate AND #EndDate) OR
(EndDate BETWEEN #StartDate AND #EndDate))
OPEN HOLIDAY_CURSOR
FETCH NEXT FROM HOLIDAY_CURSOR INTO #Date1, #Date2
WHILE ##FETCH_STATUS = 0
BEGIN
--INSERT INTO #HolidayList
INSERT INTO #HolidayList
SELECT DATEADD(DAY, number, #Date1) [Date]
FROM master..spt_values
WHERE type = 'P'
AND DATEADD(DAY, number, #Date1) <= #Date2
FETCH NEXT FROM HOLIDAY_CURSOR INTO #Date1, #Date2
END
CLOSE HOLIDAY_CURSOR;
DEALLOCATE HOLIDAY_CURSOR;
(SELECT #OUTPUT= COUNT(DISTINCT HolidaysDate)
FROM #HolidayList
WHERE HolidaysDate BETWEEN #StartDate AND #EndDate
AND DATEPART(dw, HolidaysDate) NOT IN (SELECT DISTINCT number
FROM master..spt_values
WHERE number BETWEEN 1 and 7
AND number NOT IN (SELECT WorkingDay
FROM WorkingDays
WHERE CountryId = #CountryId AND IsActive = 1)
))
---print #OUTPUT; --this will give in days
--get the output in minutes
RETURN #OUTPUT * (SELECT TOP 1 STUFF(WorkingHours, 2, 2, '')
FROM dbo.WorkingDays
WHERE CountryId = #CountryId) * 60;
END
fn_GetWorkingDayMinuts :
CREATE FUNCTION [dbo].[fn_GetWorkingDayMinuts]
(#StartDate DATETIME,
#EndDate DATETIME,
#CountryId BIGINT)
--RETURNS BIGINT
RETURNS VARCHAR(250)
AS
BEGIN
DECLARE #Temp BIGINT
SET #Temp = 0
DECLARE #FirstDay DATE
SET #FirstDay = CONVERT(DATE, #StartDate, 112)
DECLARE #LastDay DATE
SET #LastDay = CONVERT(DATE, #EndDate, 112)
DECLARE #StartTime TIME
SET #StartTime = CONVERT(TIME, #StartDate)
DECLARE #FinishTime TIME
SET #FinishTime = CONVERT(TIME, #EndDate)
DECLARE #WorkStart TIME
SET #WorkStart = (SELECT CONVERT(VARCHAR(5),CONVERT(TIME, CONVERT(VARCHAR,CONVERT(DATE, GETDATE()))+ ' ' + (SELECT TOP 1
WorkStartTime FROM WorkingDays WHERE CountryId=#CountryId), 120)))
DECLARE #WorkFinish TIME
SET #WorkFinish = (SELECT CONVERT(VARCHAR(5),CONVERT(TIME, CONVERT(VARCHAR,CONVERT(DATE, GETDATE()))+ ' ' + (SELECT TOP 1
WorkEndTime FROM WorkingDays WHERE CountryId=#CountryId), 120)))
DECLARE #DailyWorkTime BIGINT
SET #DailyWorkTime = DATEDIFF(MINUTE, #WorkStart, #WorkFinish)
IF (#StartTime<#WorkStart)
BEGIN
SET #StartTime = #WorkStart
END
IF (#FinishTime>#WorkFinish)
BEGIN
SET #FinishTime=#WorkFinish
END
IF (#FinishTime<#WorkStart)
BEGIN
SET #FinishTime=#WorkStart
END
IF (#StartTime>#WorkFinish)
BEGIN
SET #StartTime = #WorkFinish
END
DECLARE #CurrentDate DATE
SET #CurrentDate = #FirstDay
DECLARE #LastDate DATE
SET #LastDate = #LastDay
WHILE(#CurrentDate<=#LastDate)
BEGIN
--IF (DATEPART(dw, #CurrentDate)!=1 AND DATEPART(dw, #CurrentDate)!=7)
IF(DATEPART(dw, #CurrentDate) IN (SELECT distinct number FROM master..spt_values WHERE number BETWEEN 1 and 7
AND number NOT IN (SELECT
WorkingDay FROM WorkingDays where CountryId=#CountryId and IsActive=1)
))
BEGIN
IF (#CurrentDate!=#FirstDay) AND (#CurrentDate!=#LastDay)
BEGIN
SET #Temp = #Temp + #DailyWorkTime
END
--IF it starts at startdate and it finishes not this date find diff between work finish and start as minutes
ELSE IF (#CurrentDate=#FirstDay) AND (#CurrentDate!=#LastDay)
BEGIN
SET #Temp = #Temp + DATEDIFF(MINUTE, #StartTime, #WorkFinish)
END
ELSE IF (#CurrentDate!=#FirstDay) AND (#CurrentDate=#LastDay)
BEGIN
SET #Temp = #Temp + DATEDIFF(MINUTE, #WorkStart, #FinishTime)
END
--IF it starts and finishes in the same date
ELSE IF (#CurrentDate=#FirstDay) AND (#CurrentDate=#LastDay)
BEGIN
SET #Temp = DATEDIFF(MINUTE, #StartTime, #FinishTime)
END
END
SET #CurrentDate = DATEADD(day, 1, #CurrentDate)
END
-- Return the result of the function
IF #Temp<0
BEGIN
SET #Temp=0
END
--RETURN #Temp -(dbo.fn_GetHolidayMinutes (DATEADD(dd, 0, DATEDIFF(dd, 0, #StartDate)),DATEADD(dd, 0, DATEDIFF(dd, 0,
#EndDate)),#CountryId))
--RETURN #Temp
DECLARE #theMinutes INT
DECLARE #Result VARCHAR(250)
SET #theMinutes = #Temp -(dbo.fn_GetHolidayMinutes (DATEADD(dd, 0,
DATEDIFF(dd, 0, #StartDate)),DATEADD(dd, 0, DATEDIFF(dd, 0,
#EndDate)),#CountryId))
--SET #Result= concat((#theMinutes / 540),':' , (#theMinutes % 540) /
60, ':', (#theMinutes % 60))
SET #Result= concat((#theMinutes / ((SELECT TOP 1
STUFF(WorkingHours,2,2,'') FROM dbo.WorkingDays WHERE
CountryId=#CountryId) * 60)),':' , (#theMinutes % ((SELECT TOP 1
STUFF(WorkingHours,2,2,'') FROM dbo.WorkingDays WHERE
CountryId=#CountryId) * 60)) / 60, ':', (#theMinutes % 60))
RETURN #Result
END
So where to modify to the result as
BUSINESS HOURS CREATE DATE & TIME FIRST APPLY (DATE & TIME) TAT TIME CALCULATION RESULT
08h00-17h00: 9hrs/day 12-FEB-19 14:20 13-FEB-19 14:30 00:02:40 + 00:06:30 = 00:09:10 01:00:10