float_bucket_internal get_interval_units number_bucket period_bucket period_bucket_list PeriodBucketState range_bucket range_bucket_list RangeBucketState tbox_multidim_grid tbox_multidim_tile TboxGridState temporal_time_split TimeSplitState timestamptz_bucket timestamptz_bucket_internal tnumber_value_split tnumber_value_time_split ValueSplitState ValueTimeSplitState

timestamptz_bucket() Datum timestamptz_bucket ( PG_FUNCTION_ARGS  ) Return the initial timestamp of the bucket in which a timestamp falls.