Chaitra Masa is the lunar month beginning on Shukla Paksha Pratipada and ending on Krishna Paksha Amavasya. Both boundaries are governed by the tithi current at sunrise, with worship, restraint, bathing, and charity forming its principal observances.
At sunrise, a lunar month can change without any fixed place on the Gregorian calendar. Chaitra Masa is the lunar month of Chaitra, bounded here by two sunrise-governed observances: its beginning at Shukla Paksha Pratipada and its close at Krishna Paksha Amavasya. A tithi is a lunar day; paksha means one half of the lunar month. Shukla Paksha is the bright, waxing half, while Krishna Paksha is the dark, waning half.
What Chaitra Masa marks
Chaitra Masa begins with Pratipada, the first tithi, of the bright half of Chaitra. It continues through both halves of the month and ends with Amavasya, the new moon and fifteenth tithi of the dark half. Because these are lunar observances, their civil dates shift from year to year. For both boundaries, the tithi current at sunrise governs the day. This means that the date shown for the beginning or ending is selected by the sunrise condition, rather than simply by the moment a tithi starts or ends during the day.
The month is approached as a period for worship, bathing, restraint, fasting where appropriate, and dana, meaning charitable giving. These practices are not identical for every household. A person may keep the month through daily prayer and acts of charity, while a more formal observance may include a vrata, or religious vow, on the opening day and particular discipline near the close.
The opening boundary
At Chaitra Masa Arambha, the beginning of the month, the sunrise tithi is Shukla Paksha Pratipada. A tradition associated with this day is the Gauri-vrata, a vow connected with Devi Bhavani. The account preserved in the Matsya Purana is described as recommending worship and the gift of fine garments to a Brahmana couple, with Brahmana meaning a member of the priestly or learned class. Another traditional account associates three days of daytime fasting, night-time eating, river bathing, and charitable giving with this period. These prescriptions should be followed according to family and teacher guidance rather than treated as a universal requirement.
The closing boundary
At Chaitra Masa Samapanam, the ending of the month, the sunrise tithi is Krishna Paksha Amavasya. This is a natural point for completing a monthly vow, offering worship, bathing, and giving charity. The timing does not mean that the whole day is Amavasya in every location; it identifies the civil day on which the tithi current at sunrise governs the observance.
Together, the two boundaries give Chaitra Masa a clear shape: welcome the month with worship and generosity, keep its disciplines as intended, and close it with a respectful Amavasya observance. Its opening can also be read alongside the spring New Year observances that many regional calendars place around Chaitra Shukla Pratipada.
Chaitra Masa gives a traditional lunar month a defined devotional frame. Its opening at Shukla Paksha Pratipada is linked with renewal, worship, and the beginning of religious discipline, while its close at Krishna Paksha Amavasya provides a point for completing vows and offering charity. The month is also significant because many regional calendars place spring New Year observances near its bright-fortnight opening.
Traditional material connects the opening day with Gauri-vrata, a vow associated with Devi Bhavani, and describes worship joined with gifts and personal restraint. Such practices express dana, or generosity, and tapas, disciplined effort, rather than treating the calendar date as merely a marker. The closing Amavasya carries the familiar significance of the new moon: quiet worship, bathing, remembrance where customary, and completion of a period of observance. The exact intensity of practice belongs to the household, lineage, and teacher guiding it.
A simple observance of Chaitra Masa can begin with a bath, a clean place of worship, prayer to the household deity, and an act of charity. On the opening day, families who keep the Gauri-vrata may offer worship and give clothing or other suitable gifts. Traditional accounts also describe fasting during the day and eating only at night for three nights, along with river bathing and charitable gifts. This is a demanding vrata, or religious vow, and should not be undertaken without regard for health or customary guidance.
At the close, on Krishna Paksha Amavasya, worship, bathing, remembrance of ancestors where that is part of family practice, and dana, or charitable giving, may mark completion. The observance belongs to the day on which the relevant tithi is current at sunrise. Offerings should be simple and suitable for the deity and household tradition; no single food offering is firmly established here as universal for the whole month.