Weekdays range from 1-7
@override Map<int, String> get weekdayName => { 1: "ᠰᠠᠷᠠᠨ", 2: "ᠤᠯᠠᠭᠠᠨ", 3: "ᠥᠯᠡᠮᠵᠢ", 4: "ᠭᠠᠳᠠᠰᠤ", 5: "ᠴᠣᠯᠮᠤᠨ", 6: "ᠬᠡᠰᠢᠭ", 7: "ᠨᠠᠷᠠᠨ", };