सिडरल मास

sidaral mas ki ganana prithvi dvara ki jane vali soory ki parikrama ko dhyan mean rakhakar ki jati hai. yah mas 27 din, 7 ghante, 43 minat tatha 11.55 sekand ka hota hai.

panne ki pragati avastha

adhar

prarambhik

madhyamik

poornata

shodh

sanbandhit lekh

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