If you wish to have a thrilling experience of sitting on a machaan all night and counting wild animals visiting waterholes, then the time is now. This year, the waterhole census at the Sanjay Gandhi National Park (SGNP) would be carried out on May 18, which marks Buddha Purnima or the full moon day. The exercise would start around noon and continue till the same time on May 19.

Speaking to mid-day, an SGNP official said, "The annual waterhole census will be held on the night of Buddha Purnima this year. It will continue for about 24 hours till the next day." According to the plan, volunteers would have to stay on designated machaans throughout the 24 hours.