Pratipada: 10th. October, 2018, Wednesday (Ghatasthapana)
Color of the Day: Royal Blue (Gujarat & N. India)
Dwitiya: 11th. October, 2018, Thurday
Color of the Day: Yellow (Gujarat & N. India)
Tritiya: 12th. October, 2018, Friday
Color of the Day: Green (Gujarat & N. India)
Chaturthi: 13th. October, 2018, Saturday
Color of the Day: Grey (Gujarat & N. India)
Panchami: 14th. October, 2018, Sunday
Color of the Day: Orange (Gujarat & N. India)
Shashti: 15th. October, 2018, Monday
Color of the Day: White (Gujarat & North India)
Saptami: 16th. October, 2018, Tuesday
Color of the Day: Red (Gujarat & N. India)
Ashtami: 17th. October, 2018, Wednesday - Durgashtami
Color of the Day: Sky Blue (Gujarat & N. India)
Navami: 18th. October, 2018, Thursday - Saraswati Puja/Ayudha Puja
Color of the Day: Pink (Gujarat & N. India)
Color of the Day: Pink (Gujarat & N. India)
Sources:
https://www.drikpanchang.com/navratri/navratri-date.html?year=2018
https://india-public-holidays.com/tamil-nadu/2018