Table 2.5.
Intercalations in the later Achaemenid period (from Darius II) and the Seleucid period, arranged in 19-year cycles
Year 1of cycle
12 34 5 6 7 8 910111213141516171819
424/3
XII
2
XII
2
XII
2
XII
2
XII
2
VI
a 2
XII
2
405/4
XII
2
XII
2
XII
2
XII
2
XII
2
VI
b 2
XII
2
386/5
XII
c 2
(XII
) 2
d
XII
2
XII
2
(XII
) 2
e
(VI
) 2
f
XII
2
367/6
XII
2
XII
2
XII
2
XII
2
XII
2
VI
2
XII
2
348/7
XII
2
XII
2
XII
2
XII
2
XII
2
VI
2
XII
2
329/8
XII
2
XII
2
XII
2
XII
g 2
XII
2
VI
2
XII
2
310/9
XII
2
XII
2
XII
2
XII
2
XII
2
VI
2
XII
2
291/0
XII
2
XII
2
XII
h 2
XII
2
XII
2
VI
2
272/1
XII
2
XII
2
XII
i 2
XII
2
XII
2
XII
2
VI
2
XII
2
253/2
XII
2
XII
2
(XII
) 2
j
XII
k 2
XII
l 2
VI
2
XII
2
234/3
XII
2
XII
2
XII
2
XII
2
XII
2
VI
2
215/14
XII
2
XII
2
XII
2
XII
2
VI
2
XII
2
196/5
XII
2
XII
2
XII
2
XII
2
XII
2
VI
2
XII
2
177/6
(XII
) 2
m
XII
2
XII
2
158/7
XII
2
XII
2
aSo, for 408/7, according to two sources (of which one is economic) listed in Parker and Dubberstein (1956: 9) and one additional source listed by
W
alker (unpubl.: LBAT 1411
- 12).
W
alker notes that according to LBAT 1427 the intercalation was XII
; it is likely that LBAT 1427, a Saros text of lunar eclipses, represents a theoretical reconstruction of the calendar that is 2
historically incorrect (see
W
alker 1997: 24).
bSo, for 389/8, in Parker and Dubberstein (1956: 9) and in an observational text in Sachs and Hunger (1988-2006: v, no.59; see also textual reconstructi
on ibid. no. 61). It has been
suggested that LBAT 1414 implies instead XII
( 2
W
alker 1997: 24)
—
which if correct, would push the institution of the Saros Canon cycle even later
—
but according to Sachs and Hunger
(ibid. no. 2, pp. 6
- 7; also the appendix by J. M. Steele, ibid. 390
- 9), this entry in LBAT 1414 is to be dated
- 333 (334
BCE
).
cSo according to observational astronomical texts in Sachs and Hunger ibid. i, no. 384, v, nos. 59
- Saros Canon texts, however, place this intercalation in the next year (384/3), where
indeed it would rightly belong according to the Saros Canon cycle (in year 3): see Aaboe
et al.
(1991) 14
- Britton (2007: 122) argues that
‘since this is the sole anomaly in a century of