Time in the Kitten Game [duplicate]

Solution 1:

Time is measured in ticks. In the game, there are 5 ticks per second (or one tick every 200ms), and there are 10 ticks to an in-game day.

This means each day is 2 seconds long in real time. So 100 days will be 200 seconds, or 3 minutes and 20 seconds.

Note: You may experience slight variations in the time depending on the performance of your machine, but on most modern machines and browsers this should be broadly accurate.

Source: being a JavaScript game it is quite easy to look at the code directly to figure this out. If you want to take a look yourself, the main clues for figuring this out are in the calendar.js and game.js files.