Answer: All of them!
Step-by-step explanation:
A technical document because sometimes when we send the car for repairs, some parts have certain dates when they arrive and through the calendar the employees of that company tell you when the car will be ready. But there are other reasons because some work tools take several days to be produced and the exact date of market release is always determined by the calendar.
A public document cause we all need to look at a date for example for an important exam or assignment. At home, we have to watch it for any important celebration such as birthdays, holidays and others.
A consumer document cause today, when technology has reached its peak and the order from the Internet arrives at the door of the house, the date of arrival is very important, because the consumer can sometimes make the payment even when the product arrives, so according to the date in the calendar, he adjusts other jobs for that day.
A workplace document cause if you work in a food market or even with makeup, all these products have an expiration date and on the calendar side, we look at them and do not allow the consumer to buy something without a deadline.
Hope this will help you, this was my opinion!