Well, as Miquel Migjhluss
did it in catalan before I could, I'm going to post them in Greek.
Nevertheless, let me introduce two corrections first:
December is written "Desembre", and September is "Setembre", without "p".
For the russian version, it could be interesting to have the pronounciation, I'm going to put a transliteration according to spanish phonetics, it can differ in english:
Apréll (two LL
like in "casteLLano")
And the promised greek, again with transliteration into spanish phonetics, and written in small and capital letters
δευτέρα ΔΕΥΤΕΡΑ, literally "second" in feminin, since "ημέρα" (day) is a feminin word in greek
τρίτη ΤΡΙΤΗ, third
τετάρτη ΤΕΤΑΡΤΗ, fourth
πέμπτη ΠΕΜΠΤΗ, fifth
παρασκευή ΠΑΡΑΣΚΕΥΗ, from the archaic greek "preparation for religious celebration of week holy day"
σάββατο ΣΑΒΒΑΤΟ from the hebrew "sabbath", the holy week day (therefore friday for preparation)
κυριακή ΚΥΡΙΑΚΗ day of the Lord
ιανουάριος ΙΑΝΟΥΑΡΙΟΣ january, of the god Yánnos, "god of the gate"
φεβρουάριος ΦΕΒΡΟΥΑΡΙΟΣ february, of latin "fébruus", purification
μάρτιος ΜΑΡΤΙΟΣ march from latin Mars, "god of war" (must be the one of Bush, too
απρίλιος ΑΠΡΙΛΙΟΣ from latin "apério", verb "open". Could also be a missonorization of "Afro", goddes "afrodita" or "Venus"
μάϊος ΜΑΪΟΣ May from "Máia", half-goddes mother of "hermes" or "mercury", messenger of gods
ιούνιος ΙΟΥΝΙΟΣ June from Juno or Era, Zeus' wife
ιούλιος ΙΟΥΛΙΟΣ July from Julius Cæsar, roman emperor
αύγουστος ΑΥΓΟΥΣΤΟΣ August, from Octavius Augustus, roman emperor
σεπτέμβριος ΣΕΠΤΕΜΒΡΙΟΣ September, seventh (of "septem") month of the ancient roman calendar
οκτώβριος ΟΚΤΩΒΡΙΟΣ October, eighth month (of "octus") of the ancient roman calendar
νοέμβριος ΝΟΕΜΒΡΙΟΣ, november nineth month (of "novem")
δεκέμβριος ΔΕΚΕΜΒΡΙΟΣ, december, tenth month (of "dekem")
Hope I helped