This document is an excerpt from the Visualizing PI System Data Workbook v2017
Future data is data associated with a future time stamp. Data Archive 2015 allows storage and retrieval of data with time stamps beyond current time, allowing you to store data within a time range of January, 1970 through January, 2038. With Data Archive 2015 you can capture and analyze data with future time stamps, and use PI visualization tools to graphically create possible forecasts or predictions for your business.
Just as with historical data, to specify inputs for timestamps, you can enter time expressions previous discussed fixed time, reference times, and reference-time abbreviations or fixed times with a time offset. The difference being the timestamp will be in the future. Some example expressions are:
An hour from now
Three days from today at midnight
A year from yesterday