HMEPA
Hellenic Month Established Per Athens

Ποσειδεών
2nd year of the 657th Olympiad

new 17:17 1850/12/03 UTC
1 1850- 12-04/05 Νουμηνία	2 1850- 12-05/06 Ἀγαθόσ Δαίμων	3 1850- 12-06/07 Ἀθήνη	4 1850- 12-07/08 Ἀφροδίτη, Ἠρακλέησ, Ἑρμῆσ καὶ Ἒροσ	5 1850- 12-08/09 Πληρώσια	6 1850- 12-09/10 Ἂρτεμισ	7 1850- 12-10/11 Ἀπόλλων	8 1850- 12-11/12 Ποσειδῶν καὶ Θησεύσ 20:37 12/11	9 1850- 12-12/13	10 1850- 12-13/14 Διονύσια τὰ τατ' αγρούσ
11 1850- 12-14/15	12 1850- 12-15/16	13 1850- 12-16/17	14 1850- 12-17/18	15 1850- 12-18/19 05:03 12/19	16 1850- 12-19/20 Ζεύσ Ὂριοσ	17 1850- 12-20/21 yule	18 1850- 12-21/22 solstice 03:38 1850/12/22 UTC	19 1850- 12-22/23	20 1850- 12-23/24
21 1850- 12-24/25	22 1850- 12-25/26 21:25 12/25	23 1850- 12-26/27	24 1850- 12-27/28	25 1850- 12-28/29	26 1850- 12-29/30 Ἁλωά	27 1850- 12-30/31	28 1850- 12-31/1851-01-01	29 1851- 01-01/02 10:45 01/02	30 1851- 01-02/03 Τριακάσ, Ἒνη καὶ Νέα
solstice 03:38 1850/12/22 UTC						20:37 1850/12/11 UTC	05:03 1850/12/19 UTC	21:25 1850/12/25 UTC	10:45 1851/01/02 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.