| Answer | Crossword Clue |
|---|---|
| SIXTYDAY | Like some billing periods |
| PEAK | Like some airline travel periods |
| STAR | Some billing |
| HOUR | Billing unit, for some |
| ERAS | Some periods |
| NEAPS | Some tidal periods |
| OTS | Some final periods: Abbr. |
| NTS | Some P.M. periods |
| AFTS | Some P.M. periods |
| AMS | Some rush-hour periods: Abbr. |
| HOURS | Periods lasting fifty minutes, on some campuses |
