| YTD | Since the calendar flipped: Abbr. |
| IDES | Eighth day after the nones in the calendar of ancient Rome, falling on the 15th of March, May, July and October and the 13th of the other months (4) |
| JULIAN | Name of the calendar replaced by the Gregorian calendar. (6) |
| EPACT | The excess of the calendar month or solar year over the lunar (5) |
| ADVENT | German Lutherans began the practice of marking the progression to Christmas with the ... calendar |
| MARKINGTIME | Checking off the days on the calendar in the cell? (7,4) |
| MONTH | From the Old English meaning "moon", each of the 12 divisions or lunations of the calendar year (5) |
| DEC | Last page in the calendar: abbr. |
| AZTEC | Like the calendar stone called the Sun Stone |
| YEARROUND | The old artist back visiting throughout the calendar |
| DTS | Times on the calendar or schedule [abbr.] |
| DATES | Goes out with the figures on the calendar (5) |
| BC | The calendar era before the birth of Christ (2) |
| LANCE | He's torn the top of the calendar (5) |
| ALMANAC | A pound the scholar can return the calendar (7) |
| LEAPYEARS | The calendar periods in which the date, 29 February, occurs (4,5) |
| NEWYEAR | The first day or days of the calendar, celebrated as a holiday (3,4) |
| GREGORIAN | Modern date chart designed to more closely follow the tropical year, the ... calendar |
| NAMEDAY | When the Saint one is called for comes up in the calendar (4-3) |
| JULIUSCAESAR | Leap years began when who, on the advice of Greek astronomer Sosigenes, revised the calendar? (6,6) |
