Dating the Works of Epicurus

I was wondering if anyone had come across any material related to dating Epicurus' works.

I found a few references from Sedley and Arrighetti:

Sedley, On Nature XXVIII 14-16

Arrighetti, La struttura dell’Epistola di Epicuro a Pitocle 127e

While we can't date the more popular publications, Philodemus provides an unusually-well-documented list of Epistles, dated per each Archon. Clay preserves this list (51-54):

(forgive the formatting errors)

YEAR/S - Archon Name
- Epistle No. Common name (reference).

307/6 - Anaxikrates
The date of Epicurus' move to Athens, Diogenes Laertius, X.2.)

300/299 - Hegemachos
- No. 1. Peri phuseos Book XV (Arrighetti, p. 292).

296/5 - Nikias
- No. 2. Peri phuseos Book XXVIII (Arrighetti, p. 321).
- No. 3. A letter written eri Nikíov, Philodemos, On Epicurus II, fr. 1.7 (Vogliano, p. 59).

294/3 - Olympiodoros
- No. 4. A letter to a person unknown, from Philodemos, Праумаа XIV.11

292/1 - Philippos
- No. 5. A letter to Polyainos and Leonteus of Lampsakos on the Stoics in Athens, Pap.Herc. 176, fr. 5, XXIV. 14-15 (Vogliano, p. 50; Arrighetti, [67]).
- No. 6. To Themista of Lampsakos reporting on the young Pythokles, Philodemos, Пра MOTEiaL IV.8-10 (Arrighetti, [501).
- No. 7. To friends in Lampsakos on poverty, Philodemos, On Wealth XXXV.38 (Tepedino Guerra, p. 67; Arrighetti, [96]).

291/0 - Charinos
- No. 8. Letters sent to Polyainos, Charino magistratu, Seneca, Epistulae 18.9 (Arrighetti, [831).
- No. 9. A letter to Polyainos, Philodemos, On Epicurus, fr. 5.1 (Vogliano, p. 65; Arrighetti [841).
- No. 10. A letter to a person unknown, Philodemos, On Piety, Pap. Herc. 1098, X. 12 (Gomperz, p. 125; Arrighetti, [106] [lines 938-939 Obbink]).
- No. 11. To a person unknown, Philodemos, On Piety, Pap. Herc. 1077, X.1 (Gomperz, p. 105; Arrighetti, [107] [lines 840-841 Obbink]).
- No. 12. To Polyainos on poverty, Philodemos, On Wealth XXXIV.8 (Tepedino Guerra, p. 66; Arrighetti. (1081).
- No. 13. A letter to a person unknown, Philodemos, On Wealth XXXV.8 (Tepedino Guerra, p. 67; Arrighetti, [109]).

290/289 - Telokles
- No. 14. To Mithres, on a reversal of fortune, Philodemos, On Wealth XXXVI.9 (Tepedino Guerra, p. 67; Arrighetti, [791).

289/8 - Aristonymos
- No. 15. To Mithres, acknowledging a contribution to the school, Philodemos, Прааеа XXXIV.1 (Diano, p. 32; Arrighetti, [74]).
- No. 16. To Phyrson of Kolophon on the piety of a certain Theodotos. Philodemos. On Piety, Pap. Herc. 1098, XII. 15 (Gomperz, p. 127; Arrighetti, [93] [lines 797-801 Obbink]).

286/5 Diokles
- No. 17. A letter to Anaxarchos and Leontion, Pap. Herc. 176, fr. 5, XXV.31-32 (Vogliano, p. 51).

285/4 Diotimos
- No. 18. To Phyrson, Philodemos, Прауата XV.1-2 (Arrighetti, [94]).
- No. 19. If the name Diotimos is that of the archon; cf. No. 11. A Diotimos appears in Pap. Herc. 1780, VIII, fr. 1 [On Piety, lines 841-842 Obbink]. If he is Diotimos Euvóotov EnuaxiSns he cannot be the recipient of a letter from Epicurus; cf. W. Croenert, Kolotes und Menedemos, Leipzig 1906, pp. 82-83.

284/3 Isaios
- No. 20. To a person unknown, Philodemos, Прауратє XXXII. 14 (Diano, p. 19; Arrighetti, [110]).
- No. 21. To a person unknown, apparently on the education of the sons of Menoikeus, Phi- lodemos, adv. [Sophistas], fr. 16 (Sbordone 1947, p. 78; Arrighetti, [111]).

283/2 Euthios
- No. 22. On a setback of the Macedonians to a person unknown, Philodemos, On the Stoics, Pap. Herc. 339, V.9 (Arrighetti, [112]) [**Gli Stoici" VI.9 Dorandi].

281/0 Ourios
- No. 23. To Leonteus, Philodemos, Iayatr XXXII.15-16 (Diano, p. 19; Arrighetti, [68]).

279/8 Anaxikrates
- No. 24. To a person unknown, Philodemos, On the Stoics V.13, En'] 'Avatuk[p]á[rous (cf. Croenert [under No. 19], p. 54, n. 259) [*Gli Stoici" VI.13 Dorandil.

278/7 Demokles
- No. 25. To Kolotes of Lampsakos, possibly on the death of Metrodoros, Pap. Herc. 176, fr. 5, XXVIII.3-4 (Vogliano, p. 54 [cf. Gomperz in Hermes 5, 1871, pp. 387-388]; Arrighetti,[62]).
- No. 26. To Mithres, Philodemos, Maya XXIX. 17 (Diano, p. 15; Arrighetti, [75]).

274/3 Euboulos
- No. 27. To Idomeneus of Lampsakos, Philodemos, Прауцат XXVI.14 (Diano, p.12; Arrighetti, [601).
- No. 28. To Mithres on frugality, Philodemos.Прауатїа XXX.16-17 (Diano, p. 16; Arrighetti, [76]).
- No. 29. To a person unknown, asking for somebooks of Demokritos, Philodemos, adv. [Sophistas], fr. 13 (Sbordone 1947, p. 75; Arrighetti, [113]).

271/0 Pytharatos
- No. 30. To Mithres on his approaching death, Philodemos, Прауатеа XXXI.3-4 (Diano, p. 17; Arrighetti, [77])

I note that Epicurus maintained a correspondence with Mithres for over two decades.

From Philodemus and the New Testament World:, approximations from Marcello Gigante:

I'm organizing the information here: https://twentiers.com/2024/10/27/dates-of-epicurean-works/

One other discovery (I think) I've made is this:

By the Archonship of Sosistratus, beginning July of 270 BCE, Epicurus was already dead.

When he celebrated his 71st birthday in February of 270 BCE, he was still alive.

Most likely, Epicurus died in the Spring of that year.