Google Cloud Translate API, for example, sets a default quota of 2 million characters "per day".
However, I can't find their definition of "day" anywhere.
Is this calendar-based, or is it a sliding time interval?
(Observation suggests that it is a sliding time window.)
If calendar-based, when does each day begin?
Is this immutable or does it vary?
Can developers set the start or end time of a project's "days"?
If it is a sliding window, can developers reset it? This could help us manage usage that comes in bursts, and could help us test limiting situations.
Thanks in advance for any information you can provide.