Rig Hiranyakeshi Taittariya Shravani is observed on Hastha nakshatra day in Shravan month as per all lunar Hindu calendars. This a special ritual observed by some Brahmin communities in Goa, Maharashtra, and some parts of Gujarat. In 2017, Rig Hiranyakeshi Shravani Taittariya date is July 28.
The other special Shravani ritual is Rig Shukla Yajur Taittariya Shravani which performed on Rakhi Purnima festival day.
In South India also various Upakarma rituals are observed in Shravan maas. Samaveda Upakarma is observed on Hasta Nakshatra day in Bhadrapada month.
Panchang, Rig Hiranyakeshi Shravani – 28 July 2017
Suryodayam (Sunrise) 05:59 Suryastamaya (Sunset) 19:07
Chandrodayam (Moonrise) 10:34 Chandrastama (Moonset) 22:54
Paksha (Fortnight) Shukla Paksha
Tithi (Lunar Day) Panchami – 06:38
Nakshatra Hasta – 29:41*
Yoga Shiva – 14:30
Karana Kaulava – 18:44
Purnimanta Month Sraavana
Amavasyanta Month Sraavana
Shaka Samvatsara: Hevilambi
Vikram Samvat Varsha: Sadharana
Rahu Kalam: 10:54 – 12:33
Gulika Kalam: 07:38 – 09:16
Yama Gandam: 15:50 – 17:28
Ravi Rashi (Sun Sign) Karka
Chandra Rashi (Moon Sign) Kanya
Amrita Kalam 23:26 – 25:06*
Abhijit: 12:07 – 12:59
Time to Avoid
Varjyam Kalam 13:25 – 15:05
Durmuhurthams: 12:59 – 13:52
In 2015, Rig Hiranyakeshi Shravani date was August 19.
In 2014, Rig Hiranyakeshi Shravani date was August 1 / August 10.
In 2013, Rig Hiranyakeshi Shravani date was August 11.
In 2012, Rig Hiranyakeshi Shravani date was July 25. Shukla Yajur Shravani was observed a couple of days prior to Rig Hiranyakeshi Shravani in 2012.