Progress Of Indic Languages Vs English

[Bharatvarsh]

Bodhiji while it is true that many parts of Bharat have the same names, there are some differences which is why I called it Telugu calendar and days, for example 2 day names are different in Panjabi and Telugu, one of them is Sunday which is Rivivar in both Panjabi and Hindi (Ravivaar) and Thursday which is Virwar/Birwar in Panjabi.

Also many of the Tamil & Malayalam months and days are different:

http://www.cs.utk.edu/~siddhart/tamilnadu/CAL/

http://en.wikipedia.org/wiki/Malayalam_calendar

Coming to your question, Bhaumvara is not used in Telugu today but Telugu also has 3 names for Tuesday, mangalavaaram is used now but the other words are angaarakavaaram and bhaumyavaaram both of which may have been used in the past.
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->अंगार angār

H अंगार angār [S. अङ्गार],

s.m. Heated charcoal, a live coal, fire, firebrand, a bit of fire, cinder, spark; burning matter; charcoal; Tuesday:--angār-par (or angāroṅ-par) loṭnā, To roll on fire (as a religious austerity); to be very restless or disquieted, to lie (as it were) on thorns; to burn with rage, envy, or jealousy:--angāre barasnā, To rain sparks of fire, to rain fire:--angāre-kā

http://dsal.uchicago.edu/cgi-bin/philologi...ct&display=utf8<!--QuoteEnd--><!--QuoteEEnd-->
<!--QuoteBegin-->QUOTE<!--QuoteEBegin-->S भौम bhaum, adj. & s.m. Pertaining to the earth, or the ground, terrestrial:--the planet Mars; hell; ambergris:--bhaum-wār, s.m. 'Marsʼ-day,' Tuesday (=mangal).

भोम्पू bhompū

H भोम्पू bhompū, s.m.=bhoṅpū, q.v.

http://dsal.uchicago.edu/cgi-bin/philologi...ct&display=utf8<!--QuoteEnd--><!--QuoteEEnd-->
Coming to Madhumaasam, it is still used in Telugu songs and poems to mean spring but the Calendar uses Chaitramu.