WORKDAY Function in Google Sheets
Channel: Biddrup 
Date: 13/06/2023

The WORKDAY function in Google Sheets is used to calculate the end date after a specified number of working days. Here are some common things you should know about the WORKDAY function based on the provided information:

1. Syntax: The syntax for the WORKDAY function is as follows:
   WORKDAY(start_date, num_days, [holidays])

   - start_date: The date from which to begin counting.
   - num_days: The number of working days to advance from start_date. If negative, it counts backwards. If num_days is not an integer, the decimal part is truncated.
   - holidays (optional): A range or array constant containing the dates to consider as holidays. Holidays can be specified as date serial numbers or standard date values.

2. Sample Usage:
   - WORKDAY(DATE(1969,7,20), 4, A1:A10): Calculates the end date that is 4 working days after July 20, 1969, considering the holidays specified in the range A1:A10.
   - WORKDAY(A2, 10): Calculates the end date that is 10 working days after the date in cell A2, without considering any holidays.
   - WORKDAY(40909, 4, B2:B17): Calculates the end date that is 4 working days after the date serial number 40909, considering the holidays specified in the range B2:B17.
   - WORKDAY(40909, 30, {40909,40924}): Calculates the end date that is 30 working days after the date serial number 40909, considering the dates 40909 and 40924 as holidays.

3. Decimal Part Truncation: If the num_days parameter is not an integer, the decimal part is truncated. For example, WORKDAY(A2, 1.9) is equivalent to WORKDAY(A2, 1).

4. Holiday Consideration: The holidays parameter is optional. If you want to consider holidays, you can specify them using a range or array constant. Holidays can be provided as date serial numbers or standard date values. For example, [A1:A10] or {DATE(2023,6,14), DATE(2023,6,15)}.

5. Autoconversion of Number Formats: Unlike Google Sheets' autoconversion of number formats, the WORKDAY function does not automatically convert dates. Ensure that you provide the correct date format or use functions like DATE, DATEVALUE, or TO_DATE to convert dates.

6. NETWORKDAYS Function: To calculate the number of working days between two dates, you can use the NETWORKDAYS function. WORKDAY, on the other hand, calculates the end date after a specified number of working days.

7. Weekend Consideration: By default, the WORKDAY function treats Saturday and Sunday as the weekend. If you want to use other days of the week as the weekend, you can use the WORKDAY.INTL function.

Examples:

1. Project Scheduling:
Assuming the estimated number of working days for each task is in column B and the start date is in cell A2, use the following formula in cell C2 to calculate the task end date:
```
=WORKDAY(A2, B2)
```

2. Employee Leave Management:
Assuming the start date of the leave is in cell A2 and the number of leave days is in cell B2, use the following formula in cell C2 to calculate the end date of the leave:
```
=WORKDAY(A2, B2)
```

3. Invoice Due Dates:
Assuming the invoice date is in cell A2 and the number of days for payment terms is in cell B2, use the following formula in cell C2 to calculate the due date:
```
=WORKDAY(A2, B2)
```

4. Event Planning:
Assuming the start date of the event preparations is in cell A2 and the number of days required for preparations is in cell B2, use the following formula in cell C2 to calculate the event date:
```
=WORKDAY(A2, B2)
```

5. Delivery Schedule:
Assuming the order date is in cell A2, the processing time in working days is in cell B2, and the transit time in working days is in cell C2, use the following formula in cell D2 to calculate the estimated delivery date:
```
=WORKDAY(WORKDAY(A2, B2), C2)
```

6. Project Resource Allocation:
Assuming the start date of the project is in cell A2 and the estimated duration in working days is in cell B2, use the following formula in cell C2 to calculate the project end date:
```
=WORKDAY(A2, B2)
```

7. Customer Service Response Time:
Assuming the inquiry date is in cell A2 and the target response time in working days is in cell B2, use the following formula in cell C2 to calculate the target response date:
```
=WORKDAY(A2, B2)
```

8. Production Planning:
Assuming the start date of the production process is in cell A2 and the number of working days required for each step is in column B, use the following formula in cell C2 to calculate the production end date:
```
=WORKDAY(A2, SUM(B2:B))
```

9. Task Management:
Assuming the start date of the task is in cell A2 and the estimated duration in working days is in cell B2, use the following formula in cell C2 to calculate the task end date:
```
=WORKDAY(A2, B2)
```

10. Financial Reporting:
Assuming the start date of the financial instrument is in cell A2 and the number of working days until maturity is in cell B2, use the following formula in cell C2 to calculate the maturity date:
```
=WORKDAY(A2, B2)
```