Sankranti Rangoli on Chitravathi Riverbank road from near Chitravathi riverbank temple onwards

Thes pics given below of the Rangolis seem to have been done today (13th Jan. 2016). Sankranti, I am told, is tomorrow, 14th Jan. 2016. Sankranti is also known as Pongal (especially in Tamil Nadu).

[To see above pics in original size (magnified), mouse right-click, open the image in new tab, and then click on image to zoom.]

My Facebook post has more pics of the Rangolis here: https://www.facebook.com/ravi.s.iyer.7/posts/1694002637482973.

It seems that this Rangoli (muggula pottilu in Telugu, it seems) drawings were part of a local competition. The winners (ladies) can be seen being felicitated here with prizes: https://www.facebook.com/ravi.s.iyer.7/posts/1694019384147965.

Some info. about Sankranti/Pongal from https://en.wikipedia.org/wiki/Makar_Sankranti:
Makar Sankranti is an Indian festival celebrated in almost all parts of India and Nepal in lots of cultural forms. It is a harvest festival.

Makar Sankranti marks the transition of the Sun into the zodiac sign of Makara (Capricorn) on its celestial path. The day is also believed to mark the arrival of spring in India and is a traditional event.
...
According to the Hindu (Indian) calendar Makar Sankranti is a festival celebrated at Mah 1st of Hindu (Indian) Solar Calendar for the happiness of getting new crops for farmers. It also symbolizes the end of the winter solstice which makes the day last longer than night.
...
Makar Sankranti is regarded as the beginning of an auspicious phase in Indian (Hindu) culture. It is cited as the 'holy phase of transition'. It marks the end of an inauspicious phase which according to the Hindu calendar begins around mid-December. It is believed that any auspicious and sacred ritual can be sanctified in any (Hindu) Indian family, this day onwards. Scientifically, this day marks the beginning of warmer and longer days compared to the nights. In other words, Sankranti marks the termination of winter season and beginning of a new harvest or spring season.

All over the country, Makar Sankranti is observed with great fanfare. However, it is celebrated with distinct names and rituals in different parts of the country. In the states of northern and western India, the festival is celebrated as the Sankranti day with special zeal and fervour. The importance of this day has been signified in the ancient epics like Mahabharata. So, apart from socio-geographical importance, Makar Sankranti holds historical and religious significance. As it is the festival of Sun God, and he is regarded as the symbol of divinity and wisdom, the festival holds an eternal meaning.
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A correspondent responded over email (and was OK with public sharing):
These are very impressive. As a sort of engineer I wonder how they are designed and executed! For example, each pattern is done just once with no room for correction or change. Then the order of execution must be worked out carefully so that there is no need to go back over what has already been completed. You must never be caught 'painting yourself into a corner,' so to speak.

A big change from producing software where the program evolves through changes and debugging is an almost inescapable part of the activity.

[I thank Wikipedia and have presumed that they will not have any objections to me sharing the above extracts from their website on this post which is freely viewable by all, and does not have any financial profit motive whatsoever.]