As stated in the description, this is the cleared time of the bin -- the timestamp of the last reset of this row's counters. On a Curr24H row this normally matches StartTime exactly, since opening a fresh interval is itself a clear; if the two timestamps in this same row ever diverge, it means an operator or a card event forced a clear mid-interval instead of waiting for the natural roll-over. For example, a ClearTime of '2024-03-14,00:00:00.0' sitting well before the current time, with steadily climbing counters in the same row, tells you those totals reflect a long, uninterrupted accumulation rather than a recent reset.