Hindus, in determining auspicious time, take into account, apart from Day,Stars,Thithis(waxing and waning of the Moon),Yoga Karana.
These five, Day, Star, Thithi,Yoga( not the Yoga of Patanjali, here Yoga indicates auspicious/conducive period) and Karana form the basis of Hindu Almanac, called Panchanga(Five limbs).
Apart from the inauspicious time of each day,Rahu Kalam and Yama Kanda(some do not take Yama Kanda as inauspicious as this time being inauspicious for Yama the God of death, and by reverse Logic is auspicious for the Living)
Not much is known about Yogas, Siddha ,Amirth and Marana.
It would help one to read about Time calculation of the Hindus,
Please check my posts on How to find an auspicious day and Time, Hindus Calculation.
One can cross check the Yoga daily by understanding what it is about.
EIGHT DAYTIME PERIODS—THE KALAS
The period between sunrise and sunset each day is divided into eight pe- riods. Each period, or kala, lasts approximately one and one-half hours, depending on the total duration of sunlight. Three of the eight kalas are considered most im- portant—Rahu Kala, Yama Kala and Gulika Kala—known collectively as the trini samayam. Rahu Kala is considered malefic for commencing new undertakings. Yama is also an interfering current, but is less influential than Rahu. Yama Kala is considered an auspicious time for antyesti (funeral) rites. Gulika is the most auspi- cious time of the day for commencing new activities.
Each kala occurs at approximately the same time on each particular day of the week. Thus, Gulika Kala occurs at approximately 7AM every Friday. If you’ve ever wondered why Monday mornings are so infamous, note that Rahu Kala is generally between 7:30 and 9AM every Monday. The trini samayam are listed at the top of column three for each day.
Yogas are Twenty Seven.
ROUTINE OR CREATIVE WORK DAYS—AMRITADI YOGAS
The resultant of the waves propagated by the planets and the stars on the human psyche are indicated in four degrees. In the Vedic Calendar, this esoteric yoga is listed in bold type in the left column of each day’s designations.
AMRITA YOGA—CREATIVE WORK: Very good for creative types of work and auspicious undertakings.
SIDDHA YOGA—CREATIVE WORK: Good for creative types of work and auspicious undertakings.
MARANA YOGA—ROUTINE WORK: Should be avoided for new under- takings and beginning travel. Routine work only.
PRABALARSHTA YOGA—ROUTINE WORK: Should be absolutely avoided for new undertakings and beginning travel. Routine work only.
How to find the Yogas.
” Siddha Yoga:
This is formed due to the combination of the Tithi and vara
There are 5 categories of Tithis:
Nanda : Pratipad, Shasthi, Ekadasi Bhadra : Dvitiya, Saptami, Dvadasi Jaya : Tritiya, Astami, Trayodasi Rikta : Chaturthi, Navami, Chaturdasi Purna : Panchami, Dasami, Purnima, Amavasya
The 5 categories of Tithis are governed by 5 elements of nature which are given below. When a tithi falls on a weekday (Vara) governed by the same element as that of the tithi a very auspicious time is formed which goes by the name of Siddha Yoga.
Following combination of Tithis and the Varas constitute the siddha yoga:
Nanda : Friday :Venus : Jala Tattva Bhadra : Wednesday :Mercury : Prithvi Tattva Jaya : Tuesday :Mars : Agni Tattva Rikta : Saturday :Saturn : Vayu Tattva Purna : Thursday :Jupiter : Akash Tattva
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II Sarvartha Siddha Yoga
Certain combination of Nakshatras and Weekdays go by the name of Sarvartha Siddhi yoga. Activities done during this yoga usually concludes with Positive results.
Monday : Sravana, Rohini , Mrigashiras, Pushya , Anuradha Tuesday : Aswini , U.Bhadrapada, Krittika , Ashlesha Wednesday : Rohini , Anurada , Hasta , Krttika , Mrgashiras Thursday : Revati , Anuradha , Aswini , Punarvasu , Pusya Friday : Revati , Anuradha , Aswini , Punarvasu , Sravana Saturday : Sravana, Rohini , Swati Sunday : Hasta , Mula , U.Ashadha , U.Phalguni, U.Bhadra, Aswini, Pushya
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Amrita Siddhi Yoga:
This yoga is formed due to combination of Vara and Nakshatra
Sunday : Hasta Monday : Mrgashiras Tuesday : Aswini Mercury : Anuradha Thursday: Pusya Friday : Revati Saturday: Rohini
Though this is a auspicious combination, following events should be avoided:
Thursday- Pushya: Marriage Tuesday - Aswini: Grha Pravesha Saturday- Rohini: Travel
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Dvipushkar Yoga:
Following combination of Tithi, Vara and Nakshatra is called Dvipushkar Yoga:
Dvitiya , Saptami, Dvadasi Sunday , Tuesday, Saturday Dhanistha, Chitra , Mrgashiras
The events repeat again at least once if they happen in this yoga. Hence good events should happen in this yoga such as purchase of property etc. and unfortunate events such as diseases and death should not happen.
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Tripushkar Yoga:
Following combination of Tithi, Vara and Nakshatra is called Tripushkar Yoga:
Sunday, Tuesday, Saturday Dvitiya, Saptami, Dvadasi Krittika, Punarvasu, Uttaraphagulni, Vishaka, Uttarashadha, Uttarabhadrapada
The events repeat again at least twice if they happen in this yoga. Hence good events should happen in this yoga such as purchase of property etc. and unfortunate events such as diseases and death should not happen.
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ASHUBHA YOGA:
(Inauspicious combinations)
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Mrtyu Yoga:
This yoga is formed due to combination of Vara and Tithi
Tuesday , Sunday :: Pratipad , Shasthi, Ekadasi Monday , Friday :: Saptami , Dvadasi Wednesday :: Tritiya , Ashtami, Trayodasi Thursday :: Chaturthi, Navami , Chaturdasi Saturday :: Panchami , Dasami , Purnima
Adham Yoga:
This yoga is also formed due to combination of Vara and Tithi
Sunday : Saptami, Dvadasi Monday : Ekadasi Tuesday : Dasami Wednesday: Pratipad, Navami Thursday : Ashtami Friday : Saptami Saturday : Shasti
Dagdha Yoga:
This yoga is formed due to combination of Vara and Nakshatra
Sunday : Bharani Monday : Chitra Tuesday : Uttarashadha Wednesday: Dhanishtha Thursday : Uttaraphalguni Friday : Jyestha Saturday : Revati
Yamaghata Yoga:
This yoga is also formed due to combination of Vara and Nakshatra
Sunday : Magha Monday : Vishakha Tuesday : Ardra Wednesday: Moola Thursday : Krittika Friday : Rohini Saturday : Hasta Citation. http://www.panchanga.net/about-panchanga/panchangam-intro-other-indicators-in-hindu-panchangam/ http://varahamihira.blogspot.in/2005/11/yogas-in-muhurtha.html * Corrections welcome.
Ramanisblog 
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