| Noteworthy accomplishment |
| Interesting historical periods |
| Noteworthy stretches |
| Historical meeting places |
| Astronomical time periods |
| Term for a presidential period, historically |
| Periods from midnight to noon: Abbr. |
| Historical chapters |
| Pre-event periods |
| Periods in history |
| Between-periods equipment |
| Notable historical spans |
| A feather in your ___ (noteworthy achievement) |
| Noteworthy, as a performance |
| Accentuated periods |
| Amount of land a pair of oxen could plow in a day, historically |
| Periods of inactivity |
| Before-noon periods: Abbr. |
| Historical novelist Seton |
| Enero-to-diciembre periods |
| Phooey on that prehistorically set comic strip! |
| Preceding periods |
| Historical interval |
| Noteworthy periods |
| Geology class periods [subscribe to the best indie xwords today at avxwords.com] |
| Astronomical periods |
| 1978 novelty hit based on a historical person |
| Preparation periods |
| He's Terrible, historically |
| Jackie Robinson, historically |