Chart positions are collected once a day, listing details an hour later, and search volume once a day. Search results are the largest job and run on a rolling schedule through the day, so any individual phrase is refreshed periodically rather than every morning.
Every table carries the date it was captured, and pages say so where it matters — a search result set is labelled with the day we looked, not the day you are reading.
A phrase named in a report jumps that rolling queue, which is why a search that was empty when your report finished often fills in shortly afterwards.