pom —
display the phase of the moon
  
    | pom | [[[[[[cc]yy]mm]dd]HH]] | 
The pom utility displays the current phase of the moon.
  Useful for selecting software completion target dates and predicting
  managerial behavior.
  - [[[[[cc]yy]mm]dd]HH]
- Display the phase of the moon for a given time. The format is similar to
      the canonical representation used by
      date(1).
pom was written by Keith E.
  Brandt.
Times must be within range of the UNIX epoch.
This program does not allow for the difference between the TDT and
    UTC timescales (about one minute at the time of writing).
This program is based on algorithms from Practical Astronomy with
  Your Calculator, Third Edition by Peter Duffett-Smith
  ⟨pjds@mrao.cam.ac.uk⟩.