Reality is made up of momentary truths, and events. Time is made of moments and durations. And these 2 pairs exactly map onto each other, and also, individually, exhaust time and reality, respectively, completely.
If you tell me a momentary truth (John is a doctor, x=2), I will ask – WHEN? (i.e. when is it true?)
If you tell me of an event (the chemical solution turned blue, John was standing), I will ask – IN/FOR HOW MUCH TIME? (i.e. the change/permanence took/lasted for how much time?), WHEN DID THE CHANGE BEGIN? (the beginning of the change is a momentary truth) and WHEN DID THE CHANGE END? (the end of the change is a momentary truth).
To both the above cases, one can also ask – Did it repeat / Will it repeat?
If I give you some data, and you want to know more about it, you would ask me questions about that data. But if a machine wants to know more about some data, how will it know which questions to ask, to know more? But the above few are certain questions the machine can ask to know more about the temporal aspect of the data – if the data is a momentary truth, the machine will ask – ‘WHEN?’, and if the data depicts an event the machine will ask – ‘IN/FOR HOW MUCH TIME?’, ‘WHEN DID THE CHANGE BEGIN?’ & ‘WHEN DID THE CHANGE END?’
And in both the cases, the machine can ask about repetition, in the past and future.