NEW DELHI: PM Narendra Modi on Sunday reached the milestone of being the longest serving head of govt, which includes his tenure as Gujarat CM, drawing accolades from the governing NDA, with home minister Amit Shah describing it as a rare legacy built on unprecedented trust and unparalleled service.Till now, the feat was held by former Sikkim CM Pawan Kumar Chamling who kept the seat for 8,930 days between Dec 1994 and May 2019. Officials noted that Modi has ticked the landmark in his 25th year as head of govt, an uninterrupted journey he began as Gujarat CM in Oct 2001, before taking over as PM in May 2014.