Thargelion Lunar Month

Thargelion Lunar Month

The eleventh month of the Attic calendar, corresponding to the lunar term around May and June.

From Θαργήλῐᾰ (Thargḗlĭă), a festival dedicated to Apollo and Artemis held at Athens.

 Θαργηλιώνας (Thargiliónas)

https://en.wiktionary.org/wiki/Thargelion 

https://en.wiktionary.org/wiki/%CE%98%CE%B1%CF%81%CE%B3%CE%B7%CE%BB%CE%B9%CF%8E%CE%BD  

https://astropixels.com/ephemeris/phasescat/phases-1299.html

On 28.04.2025 at 20:13′ (sunset for the time zone of Athens, Hellas) starts, by the Attic calendar, the Noumenia of Thargelion, eleventh month (full) of the Annual Cycle 2800 from the first Olympiad or Fourth Year of the 700th Olympiad.

Tro-Jan War End Date and Solar Eclipse Science and the Attica Calender... 

 

"" on the 7th day before the end of the month Th[argelio]n "" 

 

Moon based calendar

The new  moon in May 1208 BCE occurred on May 16, 1208 BCE, at 10:58 Universal Time (UT). There was also another new moon at the very end of the month, on May 31, 1208 BCE, at 12:23 UT. 

The full moon occurred twice in May 1208 BCE (which is the year -1207 in astronomical year numbering):
May 2, 1208 BCE at 05:12 UT
May 31, 1208 BCE at 12:23 UT  

There was also a full moon at the very beginning of the subsequent month: 
June 29, 1208 BCE at 19:10 UT 

 

https://en.wikipedia.org/wiki/Noumenia 

 

 

Noumenia 

In the ancient Attic (Athenian) lunisolar calendar, Thargelion is the 11th month of the year, falling in late spring (typically corresponding to May/June in the Julian calendar).

Noumenia ("New Moon Day") was celebrated as the 1st day of the lunar month. Ancient Greeks marked the Noumenia not on the exact astronomical conjunction, but on the evening following the first visible crescent moon (roughly 24–48 hours after conjunction).

 

Astronomical Calculations for 1208 BCE

Astronomical New Moon (Conjunction): May 16, 1208 BCE (at ~11:00 UTC / 1:00 PM local Athenian time). 

First Visible Crescent (Noumenia): May 17 or May 18, 1208 BCE (Julian calendar). 

 

Athenian Day Start: In ancient Greece, a calendar day began at sunset rather than midnight. Thus, Thargelion 1 officially commenced at sunset on May 17, 1208 BCE and ran through the daytime of May 18.

 

 

 

 

In ancient chronography, "the 7th day from the end of the month of Thargelion 1208 B.C.E." correlates directly to June 10, 1208 B.C.E. This precise historical date was calculated based on ancient records, most notably the Parian Marble, to pinpoint the legendary fall of Troy.