UFO Sighting in Chennai, Tamil Nadu on 2017-06-05 18:20:00 - Around 6 20 pm i noticed a big cloudy halo ring for about 10 to 15 mins. i had doubt on that

Around 6 20 pm (5 jun'17 - india - tamilnadu-chennai) i noticed a big cloudy halo ring for about 10 to 15 mins over the sky)i had doubt on that, any info please share with me.