Hi my name is Bob I live in Australia. I will tell you couple words about temperature along the time here. Our time revolves around four seasons of year
summer, autumn, winter and spring. Summer months are: December, January, February which are the most hot here, next is autumn it's months are: March, April, May,
then comes winter in June and lasts through July and August. The last season is spring which months are: September, October and November.

I am a bank clerk so when I wake up and day is Monday, Thursday, Wednesday, Thursday or Friday then today is workday for me. 

But when I wake up and day is Saturday or Sunday I am happy because today is weekend and I not have to go to work.
But back to the temperature in my office is a device installed which is called thermostat. This device is responsible to keep appropriate temperature along the time.
You can set the proper temperature in office by thermostat_setting which you can change. 
Time is important in this process because depending on date we have different seasons, and depending on these seasons and hours we have different operations.
Following this thermostat operations could be during business hours of course if today is workday and time is between 9 am and 5 pm, 
on workdays before 9 am and after 5 pm operations are not during business hours. Time during weekend is not business hours too.
Therefore in a particular time thermostat_setting is usually different, thus in summer for operations during business hours thermostat_setting is 24 degrees outside business hours 27 degrees.
In autumn for operations during business hours thermostat_setting is 20 degrees outside business hours 16 degrees. 
In winter for operations during business hours thermostat_setting is 18 degrees outside business hours 14 degrees.
I must also tell about last season spring in which for operations during business hours thermostat_setting is 20 degrees outside business hours 15 degrees.