Use with everything time-based:
real time
time in V's storyline
REDengine simulation time
time dilation (e.g. when activating Sandevistan)
Time elapsed in V's storyline.
Real time, as a timestamp epoch.
REDengine simulation time.
Whether V or NPCs are currently using time dilation (usually via cyberware, e.g. Sandevistan).
Convert from real-time seconds to game time.