NIT Sikkim Holiday list 2026 Sikkim Government Calendar 2026 New Year’s Day, 1st January, Thursday, 1 Makar Sankranti, 15th January, Thursday, 1 Sonam Lochhar, 19th January, Monday, 1 Republic Day, 26th January, Monday, 1 Losar, 18th February, Wednesday, 1 Akhil Sikkim Khas Chettri Bahun Kalyan Singh’s Foundation Day, 26th February,…