Tithi Tomorrow: How to Calculate Next Days Hindu Date

A tithi is a lunar day in the Hindu calendar defined as the time it takes for the Moon to move exactly 12 degrees ahead of the Sun, making each tithi a measure of the angular distance between the two most important celestial bodies in Vedic astrology. Unlike a solar day, which always lasts exactly 24 hours, a tithi lasts anywhere from 19 to 26 hours because the Moon's orbital speed varies — it moves faster when closer to Earth (perigee) and slower when farther away (apogee). There are 30 tithis in a complete lunar month: 15 in the Shukla Paksha (waxing fortnight, from new moon to full moon) and 15 in the Krishna Paksha (waning fortnight, from full moon to new moon). As of 2026, the Vedic panchang continues to be the gold standard for daily tithi lookup, and every major Hindu religious calendar, temple schedule, and auspicious timing (muhurta) calculation is built on the foundation of tithi reckoning. The tithi you were born on — your janma tithi — influences your personality and spiritual inclination according to the Brihat Parashara Hora Shastra, which dedicates an entire chapter to the effects of each of the 30 tithis on a person's character and fate. To find tomorrow's tithi, you need either a panchang (traditional almanac) for your city, or a reliable online calculator that accounts for your geographic location. Manual calculation is also possible using the Moon's and Sun's current longitudes — a method that takes about 3 minutes with a calculator and is described in full below. Use the birth chart calculator to see how this plays out in your personal Vedic chart.

Reviewed by Shri Ankit Bansal, Vedic Astrologer with 20+ years of experience in panchang calculation and muhurta determination.

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A tithi is a lunar day defined by 12 degrees of angular separation between the Moon and the Sun, making it a time-based measure of Moon-Sun relationship rather than a fixed clock period. A calendar date (solar day) is always 24 hours, but a tithi can be shorter than 19 hours or longer than 26 hours depending on the Moon's orbital speed.

Because tithis are not equal to 24-hour days, a single solar calendar date can contain parts of 2 different tithis. A tithi can also span more than one calendar day — especially the slower tithis that occur when the Moon is near apogee. This is why the Hindu calendar says a festival "falls on" a particular date only when the relevant tithi is active at sunrise on that day: the sunrise rule determines which tithi governs the day for practical purposes. For example, if Chaturthi (4th tithi) begins at 11:00 am on Monday and ends at 7:00 am on Tuesday, then Monday is considered Tritiya (3rd tithi) because Tritiya was active at Monday's sunrise, and Tuesday is Chaturthi because Chaturthi is active at Tuesday's sunrise. This is the standard rule used by all traditional panchangs across India.

To calculate tomorrow's tithi, find the Moon's current longitude and the Sun's current longitude in degrees, subtract Sun from Moon to get the Moon-Sun angle, divide by 12, and round up to get the current tithi number. Adding approximately 12–13 degrees to the Moon's longitude gives the Moon's position at roughly the same time tomorrow, from which you calculate the next tithi.

The step-by-step manual method requires 5 inputs:

1. Find the Moon's current longitude (degrees) from any astronomy app or ephemeris. Example: Moon at 95°. 2. Find the Sun's current longitude (degrees). Example: Sun at 47°. 3. Subtract: Moon – Sun = 95° – 47° = 48°. 4. Divide by 12: 48° ÷ 12 = 4. This means 4 complete tithis have passed, so the current tithi is the 4th — Chaturthi. 5. To find tomorrow's approximate tithi, add 12° to the Moon's longitude (Moon moves approximately 12–13° per day): 95° + 12° = 107°. New Moon-Sun difference = 107° – 47° = 60°. 60° ÷ 12 = 5 — tomorrow's tithi is the 5th (Panchami).

This calculation gives the tithi at approximately the same time tomorrow. Because the Sun also moves approximately 1° per day, the exact calculation adjusts the Sun's longitude by +1° as well — making the net daily change in Moon-Sun angular separation approximately 11–12° per day on average. For precise real-time calculation, always use a panchang app or the birth chart calculator which includes a built-in panchang display showing today's and tomorrow's tithi for your location.

The 15 Shukla Paksha tithis each have a governing deity, an associated planet, and a set of favourable activities. The 15th tithi (Purnima, full moon) is the culmination of the waxing cycle and is governed by the Moon itself.

Tithi No. | Name | Deity | Governing Planet | Favourable Activities

• 1 — Pratipada — Agni (Fire) — Sun — New beginnings, starting businesses, travel
• 2 — Dwitiya — Brahma — Moon — Artisan work, planting, marriage
• 3 — Tritiya — Gauri/Parvati — Mars — Cutting hair, buying ornaments, music
• 4 — Chaturthi — Ganesha/Yama — Mercury — Ganesh puja, removing obstacles
• 5 — Panchami — Nagas — Jupiter — Learning, medicine, starting studies
• 6 — Shashthi — Kartika/Skanda — Venus — Victory, battle, competitive exams
• 7 — Saptami — Sun (Surya) — Sun — Travel, riding vehicles, fire rituals
• 8 — Ashtami — Shiva/Rudra — Saturn — Shiva puja, fasting, spiritual discipline
• 9 — Navami — Durga/Ambika — Sun — Durga worship, yajna, brave deeds
• 10 — Dashami — Yama/Dharmaraja — Moon — Auspicious deeds, giving gifts, virtue
• 11 — Ekadashi — Vishnu/Hari — Mercury — Fasting, Vishnu worship, charity
• 12 — Dwadashi — Vishnu/Hari — Jupiter — Breaking Ekadashi fast, Vishnu puja
• 13 — Trayodashi — Kamadeva/Shiva — Venus — Marriage, love, romance, puja
• 14 — Chaturdashi — Shiva/Kali — Saturn — Shiva and Kali worship, Pradosh vrat
• 15 — Purnima — Moon (Chandra) — Moon — Ancestor rites, gratitude, full moon vrat

The Krishna Paksha tithis carry the same names (Pratipada through Chaturdashi) but end in Amavasya (new moon, governed by ancestors/Pitrs) rather than Purnima.

For weddings and major life events, 6 specific tithis are considered most auspicious by traditional muhurta astrology: Dwitiya (2nd), Tritiya (3rd), Panchami (5th), Saptami (7th), Dashami (10th), and Trayodashi (13th) in the Shukla Paksha. These are called the Shubha Tithis (auspicious lunar days).

Activity | Best Tithis | Tithis to Avoid

• Marriage — Dwitiya, Tritiya, Panchami, Saptami, Dashami, Trayodashi (Shukla Paksha) — Chaturthi, Ashtami, Navami, Chaturdashi, Amavasya
• Starting a business — Pratipada, Dwitiya, Panchami, Dashami — Chaturthi, Chaturdashi, Amavasya
• Travel — Dwitiya, Saptami, Dashami, Trayodashi — Ashtami, Chaturdashi, Amavasya
• Buying a house/land — Dwitiya, Tritiya, Panchami, Dashami — Chaturthi, Chaturdashi, Amavasya
• Starting studies — Panchami (Vasant Panchami), Dwadashi — Chaturdashi, Amavasya
• Child's first haircut — Dwitiya, Tritiya, Panchami, Saptami — Chaturthi, Ashtami, Chaturdashi
• Medical surgery — Dwitiya, Tritiya, Panchami, Saptami, Dashami — Chaturthi, Ashtami, Navami

The Rikta Tithis (literally "empty" tithis) — Chaturthi (4th), Navami (9th), and Chaturdashi (14th) — are considered inauspicious for starting new ventures. Ashtami (8th) and Amavasya (new moon) are also avoided for most auspicious activities.

Phaladeepika (Chapter 26 on Muhurta) states: "Actions commenced on Rikta tithis bear fruit only after great difficulty or not at all." For personalised muhurta analysis tied to your own planetary periods, use the birth chart calculator to generate your Vedic chart and identify your current Mahadasha and Antardasha, which interact with tithi auspiciousness.

There are 5 recurring vrat tithis observed every single lunar month throughout the Hindu calendar year. Each carries its own fasting protocol, deity, and set of ritual activities.

1. Chaturthi (4th tithi) — Ganesha Chaturthi vrat. Fast from sunrise, break at moonrise. Offer durva grass, modak, and red flowers to Ganesha. The Sankatahara Chaturthi (Krishna Paksha 4th) is specifically for removing obstacles. Recite Ganesha Atharvashirsha.

2. Ekadashi (11th tithi) — Vishnu vrat, the most widely observed monthly vrat. 24-hour fast from sunrise of Ekadashi to sunrise of Dwadashi. No grains, no beans. Offer tulsi leaves and yellow flowers to Vishnu. Recite Vishnu Sahasranama. There are 24 named Ekadashis in the year, each with a different name and specific story. The Shiva Purana states that observing all 24 Ekadashis in a year equals the merit of performing 1,000 Ashwamedha yajnas.

3. Pradosh (13th tithi, Trayodashi) — Shiva vrat observed on the evening of the 13th tithi in both Shukla and Krishna Paksha. The most auspicious time is the Pradosh Kaal — approximately 1.5 hours before and after sunset. Offer bel patra, milk, and white flowers to Shiva. Soma Pradosh (Monday Pradosh) and Shani Pradosh (Saturday Pradosh) carry extra merit.

4. Purnima (15th tithi, Full Moon) — Ancestor worship and thanksgiving. Fast during the day, bathe in a river if possible, offer arghya (water in a copper vessel) to the Moon at moonrise. Donate food and clothes to the poor. Each Purnima has a specific name and significance: Guru Purnima (Ashadha), Sharad Purnima (Ashwina), Kartik Purnima, and so on.

5. Amavasya (New Moon, 30th tithi) — Pitru Tarpan (ancestor rites). Offer water and sesame seeds (til) to ancestors by standing in a river or using a copper vessel at home. Fast during the day. Light sesame oil lamps in the evening. Avoid auspicious events, new starts, and celebrations.

Each tithi influences the mind (Moon) in a measurable way because the Moon's phase directly affects the gravitational and electromagnetic field of the Earth. Brihat Parashara Hora Shastra (Chapter 3) explicitly links Moon phase tithis to mental clarity, emotional stability, and the quality of sleep and dreams.

On Purnima (full moon), the Moon's gravitational pull is strongest, causing heightened emotional sensitivity, vivid dreams, and difficulty sleeping in some individuals. This is why many fasting traditions assign Purnima as a vrat day — reduced food intake aligns the body's energy with the Moon's heightened pull. On Amavasya (new moon), the Moon is invisible and the gravitational pull is minimal, creating a "vacuum" effect in the mental field — many people feel tired, introspective, or emotionally flat on Amavasya. The 4 days around Amavasya (Trayodashi, Chaturdashi, Amavasya, and Pratipada) are the Pitru Paksha days of each month — days when the connection between the living and the ancestors is strongest.

Modern research parallels this understanding: a 2013 study published in Current Biology (Cajochen et al.) documented reduced deep sleep, lower melatonin levels, and a 20-minute longer time to fall asleep around full moon nights — an effect that persisted even in controlled indoor environments. The Vedic panchang encoded this relationship 5,000 years ago in the system of tithi-based daily guidance.

Your birth tithi (the tithi active at your time of birth) is one of the 5 limbs of the panchang recorded in every traditional Vedic birth chart, and it influences your temperament, spiritual inclinations, and karmic patterns. Brihat Parashara Hora Shastra dedicates Chapter 7 (Panchaanga Phala) to the effects of birth tithi on a person's life.

People born on Pratipada (1st tithi) are said to be independent and pioneering. Those born on Purnima (15th tithi) have a natural connection to the Moon — often emotionally sensitive, spiritually inclined, and strongly influenced by their mother. Birth on Amavasya (new moon) creates a deep connection to ancestors and the past — such individuals often carry unresolved ancestral patterns that appear in the 4th or 12th house of their chart. Birth on Chaturdashi (14th, ruled by Shiva) creates a person drawn toward spiritual discipline, solitude, and transformative experiences.

The birth chart calculator shows your exact birth tithi along with the other 4 panchang elements (Vara/weekday, Nakshatra, Yoga, and Karana) — all 5 of which are used together in advanced muhurta and compatibility analysis. Matching birth tithis between potential marriage partners (Tithi Kuta) is one of the 36 compatibility factors in the Vedic matchmaking system described in the Phaladeepika.

The 3 most accurate ways to find tomorrow's tithi are: a local printed panchang for your city, a digital panchang app with location settings, and the manual calculation method described above. Of these, the local printed panchang published by a traditional press (such as the Gita Press or local Jyotisha publications) is the most reliable because it is prepared by traditional scholars using classical calculation methods.

Digital panchang apps vary in accuracy based on their underlying ephemeris. The most reliable apps use the Swiss Ephemeris (the same ephemeris used by professional Vedic astrologers) and require you to input your city to calculate the tithi at local sunrise. A tithi determined for Delhi will differ from one determined for Chennai on some days, because the sunrise time differs by approximately 30–40 minutes between the two cities, and a fast-moving tithi can change between those sunrise times.

The key check is always: which tithi is active at the moment of sunrise in my city tomorrow? That is the tithi for tomorrow according to the Hindu calendar. If a tithi is "kshaya" (destroyed — shorter than 24 hours and not touching any sunrise), it is skipped in the calendar that year. If a tithi is "vriddhi" (expanded — present at 2 consecutive sunrises), it appears twice in the calendar. Both phenomena occur several times per year.

A muhurta (auspicious time window) is determined by combining 5 panchang elements: Tithi + Vara (weekday) + Nakshatra (Moon's constellation) + Yoga + Karana. No single element alone creates a full muhurta — all 5 must be evaluated together. Certain combinations create especially auspicious muhurtas (called Siddha Yoga, Amrita Siddhi Yoga, etc.) and certain combinations create especially inauspicious ones (Visha Yoga, Dagdha Yoga, etc.).

The strongest auspicious muhurta combination for a wedding, for example, requires: Shubha Tithi (one of the 6 good tithis) + Shubha Vara (Monday, Wednesday, Thursday, or Friday) + Shubha Nakshatra (Rohini, Mrigashira, Magha, Uttara Phalguni, Hasta, Swati, Anuradha, Uttara Ashadha, or Uttara Bhadrapada) + Shubha Yoga (Siddha, Sadhya, Shubha, Shukla, Brahma, or Indra Yoga). The combination of all 4 correct elements on the same day is relatively rare — which is why auspicious wedding dates in the Hindu calendar are limited. K.N. Rao's works on predictive astrology extensively discuss how tithi-nakshatra combinations can be used to assess the outcome of actions taken on any given day.

Hindu festivals follow the lunar calendar, which completes 12 lunar months in approximately 354 days — 11 days shorter than the 365-day solar year. This creates a drift of approximately 11 days per year between the Hindu festival dates and the Gregorian calendar. To prevent festivals from drifting across all seasons, an intercalary month called Adhika Masa (or Mal Maas) is inserted approximately every 2.5–3 years to realign the lunar and solar years.

The result is that a festival like Diwali (Amavasya of Kartik month) falls on a different Gregorian date each year, moving approximately 11 days earlier compared to the previous year, then jumping forward by about 30 days in the year when Adhika Masa occurs. In 2026, for example, Diwali falls in October — and the exact date depends on when Kartik Amavasya tithi begins and ends relative to local sunrise. The Vedic panchang published for each year accounts for Adhika Masa and all tithi anomalies, which is why it remains the definitive source for festival dates rather than a fixed Gregorian calendar. Using the numerology calculator alongside your panchang can also help you identify personally significant tithi days within each year based on your numerological profile.

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