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தமிழ் மாதங்களும் தசதி மாதங்களும். 1. தமிழ் மாதங்களில் சித்திரை, கார்த்திகை, தை முதலியன ஐ யில் முடிகின்றன. 2. வைகாசி ஆனி ஆடி ஆவணி புரட்டாசி ஐப்பசி மார்கழி பங்குனி முதலியன இ – இல் முடிகின்றன 3. ஆனி ஆடி ஆவணி – அரசு அமைச்சு அரண் 4. 4வது மாதம் ஊழ் / 8வது மாதம் கூழ் 5.

We introduce all new International calendar with 13 months of 28 days calendar.  Tropical Zodiac  Solar = 365.2421875 Lunar = 27.321582 Ratio = 13.368266 Sidereal Zodiac Solar = 365.2564 Lunar = 27.321661 Ratio =  13.368796. As per ratio, we assume 13 full lunations occur in a year. So we create 13 month calendar of 28 days each. one day is added in the last month to count 365 days. Months are formed by 26 alphabets.

http://irjt.iorpress.org/index.php/irjt/article/view/48

Modified version of Gregorian Calendar to a standard 13 month form. Current Gregorian calendar has 28,29,30 and 31 calendar in complex structure. We modify the structure into unique 28 days. In a year 13 cycles of 28 days gives 364 days. Remaining one or two days are added as leap days like newton day and einstein day.

Alphazet Calendar 1. It is the modified version of proposed international fixed calendar with alignment with current civil calendar. International fixed calendar has 364 days (13 months with 28 days). Additional days does not have weekdays. But it is not practically possible. In New international calendar, 365 or 366 days are included. 2. In this calendar, 12 months are unique (28 days exactly 4 weeks). Additional month has 29 days in normal and 30 days in leap. 3. To synchronize with current civil calendar, second month is kept as leap month. 4. Month names are derived from Greek letters. 1. ANU – Jan 1 2. BEO – Jan 29 [29 or 30 days] 3. CIP – Feb 27 /28* 4. DEQ – Mar 27 5. ERO – Apr 24 6. FIS – May 22 7. GAT – June 19 8. HUP – July 17 9. IVO – Aug 14 10. JAW – Sep 11 11. KIX – Oct 9 12. LAY – Nov 6 13. MEZ- Dec 4 Some important Dates: Vernal Equinox – CIP 23 Summer Solstice – GAT 4 Autumn Equinox – JAW Winter Solstice – MEZ 18 In this calendar, 12 months are in equal length. Plan an

தசதி மாதங்களுக்கு இணையான ஆங்கில குறியீடு. 1. பாமதி paamathi PAA or PAI 2. இல்மதி Ilmathi ILM /ILA 3. துறமதி thuramathi THU/TUR 4. ஊழ்மதி oozhmathi OOZ/ OOL 5. அரசுமதி Arasumathi ARA / ARS 6. அமைச்சுமதி Amaichumathi AMI 7. அரண்மதி aranmathi ARN 8. கூழ்மதி koozhmathi KOO 9. படைமதி padaimathi PAD 10. நட்புமதி natpumathi NAT 11. குடிமதி kudimathi KUD 12. களமதி kalamathi KAL 13. கற்புமதி karpumathi KAR

Existing System: Indian National Calendar: 1. Chaitra – Mar 22/21* (30/31* Days) 2. Vaishaka – Apr 21  (31 Days) 3. Jyeshta – May 22 (31 Days) 4. Ashada – June 22  (31 Days) 5. Shravana – July 23  (31 Days) 6. Bhadrapadha – Aug 23  (31 Days) 7. Ashwina – Sep 23  (30 Days) 8. Kartika – Oct 23  (30 Days) 9. Agrahayana – Nov 22  (30 Days) 10. Pausha – Dec 22  (30 Days) 11. Magha – Jan 21  (30 Days) 12. Phalguna – Feb 20  (30 Days) 52 Days are shifted from Normal year to Leap year. Modern Indian National Calendar (Proposed): 1. Chaitra – Mar21 (31 Days) 2. Vaishaka – Apr 21  (31 Days) 3. Jyeshta – May 22 (31 Days) 4. Ashada – June 22  (31 Days) 5. Shravana – July 23  (31 Days) 6. Bhadrapadha – Aug 23  (30 Days) 7. Ashwina – Sep 22  (30 Days) 8. Kartika – Oct 22 (30 Days) 9. Agrahayana – Nov 21  (30 Days) 10. Pausha – Dec 21  (30 Days) 11. Magha – Jan 20  (30/31* Days) 12. Phalguna – Feb 19/20  (30 Days) 10 Days are shifted from Normal year to Leap year.