Why Adhika Masam Is Different: A Guide to the Extra Lunar Month

 

Adhika Masam is an extra lunar month added every 2–3 years to synchronize the Hindu lunar calendar with the solar year, unlike regular months which follow a fixed lunar cycle.

What Is Adhika Masam?

  • Meaning: Adhika means “extra” and Masam means “month” in Sanskrit.
  • Purpose: It adjusts the mismatch between the lunar year (354 days) and solar year (365 days) by adding a 13th month approximately every 32.5 months.
  • Occurrence: Happens when the Sun does not transit into a new zodiac sign (rāshi) during a lunar month. That month is then declared as Adhika Masam.

Key Differences Between Adhika Masam and Regular Months

FeatureAdhika MasamRegular Lunar Month
FrequencyOnce every 2–3 yearsEvery month (12 per year)
Number of Months13 months in that year12 months per lunar year
Solar Transit (Sankranti)No solar transit during this monthEach month has a solar transit
Deity AssociationInitially had no deity; later assigned to Lord Vishnu as PurushottamaEach month is associated with a specific deity
Festivals & Auspicious EventsTraditionally considered inauspicious for weddings and major ritualsMost months have festivals and auspicious timings
Spiritual SignificanceFocus on charity, devotion, and spiritual practicesMix of spiritual, social, and ritual events

Cultural Notes

  • In regions following the solar calendar (e.g., Tamil Nadu, Kerala, Bengal), Adhika Masam is not observed.
  • Despite being called Mala Masam (impure month), it is spiritually potent and ideal for japa, parayana, and dana.

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