User:Adhemar/Calendar snippets
This page contains a 5 calendar snippets. Each is a sequence of 6 consecutive days. It is intended as an illustration for:
- the absence of year 0 in the historian’s way of counting the year; and the inclusion in the astronomer’s way
- the use of the Gregorian calendar proleptically in ISO 8601:2004
- the use of Lady Day as the first day of the year by the Venerable Bede
- the difference between the Before Christ convention as currently used today and Bede’s ante Incarnationis Dominicæ tempus
- the discrepancy between the actually used Roman calendar and the Julian calendar (as intended) up until the day before the Kalends of March in the year when Cossus Cornelius Lentullus and Lucius Calpurnius Piso were consuls
- the fact that 1 B.C. is a leap year in both the Julian and the Gregorian calendar, but wasn’t actually a bissextile year in the then observed Roman calendar
| Weekday Julian day at noon |
Roman | Bede | Historians Julian calendar |
Astronomers Julian calendar |
ISO 8601 Proleptic Gregorian calendar |
|---|---|---|---|---|---|
| Tue. 1 721 056 |
4 Kal. Jan. Augustus & Silvanus 29 Dec. 752 A.U.C. |
30 Dec. 2 a.I.D.t. | 30 Dec. 2 B.C. | 30 Dec. -1 | -0001-12-28 |
| Wed. 1 721 057 |
3 Kal. Jan. Augustus & Silvanus 30 Dec. 752 A.U.C. |
31 Dec. 2 a.I.D.t. | 31 Dec. 2 B.C. | 31 Dec. -1 | -0001-12-29 |
| Thu. 1 721 058 |
prid. Kal. Jan. Augustus & Silvanus 31 Dec. 752 A.U.C. |
1 Jan. 2 a.I.D.t. | 1 Jan. 1 B.C. | 1 Jan. 0 | -0001-12-30 |
| Fri. 1 721 059 |
Kal. Jan. Lentulus & Piso 1 Jan. 753 A.U.C. |
2 Jan. 2 a.I.D.t. | 2 Jan. 1 B.C. | 2 Jan. 0 | -0001-12-31 |
| Sat. 1 721 060 |
4 Non. Jan. Lentulus & Piso 2 Jan. 753 A.U.C. |
3 Jan. 2 a.I.D.t. | 3 Jan. 1 B.C. | 3 Jan. 0 | 0000-01-01 |
| Sun. 1 721 061 |
3 Non. Jan. Lentulus & Piso 3 Jan. 753 A.U.C. |
4 Jan. 2 a.I.D.t. | 4 Jan. 1 B.C. | 4 Jan. 0 | 0000-01-02 |
| Fri. 1 721 115 |
4 Kal. Mar. Lentulus & Piso 26 Feb. 753 A.U.C. |
27 Feb. 2 a.I.D.t. | 27 Feb. 1 B.C. | 27 Feb. 0 | 0000-02-25 |
| Sat. 1 721 116 |
3 Kal. Mar. Lentulus & Piso 27 Feb. 753 A.U.C. |
28 Feb. 2 a.I.D.t. | 28 Feb. 1 B.C. | 28 Feb. 0 | 0000-02-26 |
| Sun. 1 721 117 |
prid. Kal. Mar. Lentulus & Piso 28 Feb. 753 A.U.C. |
29 Feb. 2 a.I.D.t. | 29 Feb. 1 B.C. | 29 Feb. 0 | 0000-02-27 |
| Mon. 1 721 118 |
Kal. Mar. C.Cæsar & Paullus 1 Mar. 753 A.U.C. |
1 Mar. 2 a.I.D.t. | 1 Mar. 1 B.C. | 1 Mar. 0 | 0000-02-28 |
| Tue. 1 721 119 |
6 Non. Mar. Lentulus & Piso 2 Mar. 753 A.U.C. |
2 Mar. 2 a.I.D.t. | 2 Mar. 1 B.C. | 2 Mar. 0 | 0000-02-29 |
| Wed. 1 721 120 |
5 Non. Mar. Lentulus & Piso 3 Mar. 753 A.U.C. |
3 Mar. 2 a.I.D.t. | 3 Mar. 1 B.C. | 3 Mar. 0 | 0000-03-01 |
| Mon. 1 721 139 |
11 Kal. Apr. Lentulus & Piso 22 Mar. 753 A.U.C. |
22 Mar. 2 a.I.D.t. | 22 Mar. 1 B.C. | 22 Mar. 0 | 0000-03-20 |
| Tue. 1 721 140 |
10 Kal. Apr. Lentulus & Piso 23 Mar. 753 A.U.C. |
23 Mar. 2 a.I.D.t. | 23 Mar. 1 B.C. | 23 Mar. 0 | 0000-03-21 |
| Wed. 1 721 141 |
9 Kal. Apr. Lentulus & Piso 24 Mar. 753 A.U.C. |
24 Mar. 2 a.I.D.t. | 24 Mar. 1 B.C. | 24 Mar. 0 | 0000-03-22 |
| Thu. 1 721 142 |
8 Kal. Apr. Lentulus & Piso 25 Mar. 753 A.U.C. |
25 Mar. 1 a.I.D.t. | 25 Mar. 1 B.C. | 25 Mar. 0 | 0000-03-23 |
| Fri. 1 721 143 |
7 Kal. Apr. Lentulus & Piso 26 Mar. 753 A.U.C. |
26 Mar. 1 a.I.D.t. | 26 Mar. 1 B.C. | 26 Mar. 0 | 0000-03-24 |
| Sat. 1 721 144 |
6 Kal. Apr. Lentulus & Piso 27 Mar. 753 A.U.C. |
27 Mar. 1 a.I.D.t. | 27 Mar. 1 B.C. | 27 Mar. 0 | 0000-03-25 |
| Thu. 1 721 422 |
3 Kal. Jan. Lentulus & Piso 30 Dec. 753 A.U.C. |
30 Dec. 1 a.I.D.t. | 30 Dec. 1 B.C. | 30 Dec. 0 | 0000-12-28 |
| Fri. 1 721 423 |
prid. Kal. Jan. Lentulus & Piso 31 Dec. 753 A.U.C. |
31 Dec. 1 a.I.D.t. | 31 Dec. 1 B.C. | 31 Dec. 0 | 0000-12-29 |
| Sat. 1 721 424 |
Kal. Jan. C.Cæsar & Paullus 1 Jan. 754 A.U.C. |
1 Jan. 1 a.I.D.t. | 1 Jan. A.D. 1 | 1 Jan. 1 | 0000-12-30 |
| Sun. 1 721 425 |
4 Non. Jan. C.Cæsar & Paullus 2 Jan. 754 A.U.C. |
2 Jan. 1 a.I.D.t. | 2 Jan. A.D. 1 | 2 Jan. 1 | 0000-12-31 |
| Mon. 1 721 426 |
3 Non. Jan. C.Cæsar & Paullus 3 Jan. 754 A.U.C. |
3 Jan. 1 a.I.D.t. | 3 Jan. A.D. 1 | 3 Jan. 1 | 0001-01-01 |
| Tue. 1 721 427 |
prid. Non. Jan. Vinicius & Varus 4 Jan. 754 A.U.C. |
4 Jan. 1 a.I.D.t. | 4 Jan. A.D. 1 | 4 Jan. 1 | 0001-01-02 |
| Tue. 1 721 504 |
11 Kal. Apr. C.Cæsar & Paullus 22 Mar. 754 A.U.C. |
22 Mar. 1 a.I.D.t. | 22 Mar. A.D. 1 | 22 Mar. 1 | 0001-03-20 |
| Wed. 1 721 505 |
10 Kal. Apr. C.Cæsar & Paullus 23 Mar. 754 A.U.C. |
23 Mar. 1 a.I.D.t. | 23 Mar. A.D. 1 | 23 Mar. 1 | 0001-03-21 |
| Thu. 1 721 506 |
9 Kal. Apr. C.Cæsar & Paullus 24 Mar. 754 A.U.C. |
24 Mar. 1 a.I.D.t. | 24 Mar. A.D. 1 | 24 Mar. 1 | 0001-03-22 |
| Fri. 1 721 507 |
8 Kal. Apr. C.Cæsar & Paullus 25 Mar. 754 A.U.C. |
25 Mar. A.D. 1 | 25 Mar. A.D. 1 | 25 Mar. 1 | 0001-03-23 |
| Sat. 1 721 508 |
7 Kal. Apr. C.Cæsar & Paullus 26 Mar. 754 A.U.C. |
26 Mar. A.D. 1 | 26 Mar. A.D. 1 | 26 Mar. 1 | 0001-03-24 |
| Sun. 1 721 509 |
6 Kal. Apr. C.Cæsar & Paullus 27 Mar. 754 A.U.C. |
27 Mar. A.D. 1 | 27 Mar. A.D. 1 | 27 Mar. 1 | 0001-03-25 |
Abbreviations
- Kal. = Kalends
- Non. = Nones
- prid. = pridie = the day before
- B.C. = Before Christ (or Before the Common era)
- A.D. = Anno Domini = Year of the Lord
- a.I.D.t. = ante Incarnationis Dominicæ tempus = before the time of the Lordly Incarnation
- A.U.C. = Ab Urbe Condita = since the Foundation of the City (of Rome) (after Varro)
Conventions
- red line = epoch (start of new era)
- blue line = (start of) new year number (but not epoch)