NocTel Insight performs nightly data refreshes - typically at midnight Pacific time. Real-time reporting is very resource intensive depending on how large the data set is or how complex the query is. Heavy requests to data backends from NocTel Insight are added onto the as received processing NocTel Insight itself must perform to stage data and produce reports resulting in multiple layers of processing before you see the resulting report.
Nightly refreshes performed by NocTel Insight fetch all data current as of midnight and pre-processes it. This way when you fetch a report that has complex data transformations or spans a very large amount of data, it takes a mere fraction of the time it would take to perform a live query and produce the same report.
Given this, NocTel Insight will always have data up to the day before.