HMEPA
Hellenic Month Established Per Athens

Ποσειδεών
1st year of the 131th Olympiad

new 00:24 -256/12/14 UTC
1 -256-12-14/15 Νουμηνία	2 -256-12-15/16 Ἀγαθόσ Δαίμων	3 -256-12-16/17 Ἀθήνη	4 -256-12-17/18 Ἀφροδίτη, Ἠρακλέησ, Ἑρμῆσ καὶ Ἒροσ	5 -256-12-18/19 Πληρώσια	6 -256-12-19/20 Ἂρτεμισ	7 -256-12-20/21 Ἀπόλλων	8 -256-12-21/22 Ποσειδῶν καὶ Θησεύσ 23:43 12/21	9 -256-12-22/23	10 -256-12-23/24 Διονύσια τὰ τατ' αγρούσ
11 -256-12-24/25 solstice 23:08 -256/12/24 UTC	12 -256-12-25/26	13 -256-12-26/27	14 -256-12-27/28	15 -256-12-28/29 14:13 12/29	16 -256-12-29/30 Ζεύσ Ὂριοσ	17 -256-12-30/31	18 -256-12-31/-255-01-01	19 -255-01-01/02	20 -255-01-02/03
21 -255-01-03/04	22 -255-01-04/05 08:37 01/05	23 -255-01-05/06	24 -255-01-06/07	25 -255-01-07/08	26 -255-01-08/09 Ἁλωά	27 -255-01-09/10	28 -255-01-10/11	29 -255-01-11/12	30 -255-01-12/13 Τριακάσ, Ἒνη καὶ Νέα 16:08 01/12
solstice 23:08 -256/12/24 UTC						23:43 -256/12/21 UTC	14:13 -256/12/29 UTC	08:37 -255/01/05 UTC	16:08 -255/01/12 UTC

The crescent:			visible in Athens on this day.
	may be	is

Moon phase and solar year events are shown on the day in Athens. If your sunset occurs later than sunset in Athens, the event may occur on the previous day; if your sunset occurs earlier than sunset in Athens, the event may occur on the next day. Know your local sunset time in UTC and compare that to the time given to know which day the event falls on for you.

UTC is "Coordinated Universal Time", commonly called Greenwich Mean Time. See http://physics.nist.gov/GenInt/Time/world.html for information.