The Aztec calendar, which was based on star and sun positions.
http://en.wikipedia.org/wiki/Aztec_calendar
you can use it by saying " I keep track of my dailey schedule everyday."
To keep track of what stock they have in the shop.
maybe to keep track of recipes, digitally or keep track of menus and stuff
they use it to keep track of their experiments
They could use it to keep lists of payments made to them by patients. They could use it to keep other details on patients. They could use it for some of the financial data that is needed to run their business. They could use it to keep track of amounts of pills they use or doses for things they administer to their patients. They could keep track of the amount of patients they deal with. They could keep track of the amount of times certain illnesses are occurring. There are many other ways they could use a spreadsheet.
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they would use cuneiform and they would keep 9 tools ;-;
to keep track of bills/ costs of things.
my advice to you is study and use notecards
sacrifice people and adore their gods they would also use it to keep a look out for their enemies
To keep track of how much money someone has in their bank account. To keep track of how much money someone has in their bank account.
You can always use Microsoft Outlook's calendar to help manage and keep track of all your daily tasks.