Project files: https://github.com/damirpristav/react-ts-calendar-and-datepicker
00:00 - Intro
00:05 - Project Preview
00:55 - Setup
04:07 - useCalendar hook
14:29 - Calendar component
37:30 - Calendar - years and months mode
53:00 - Calendar - current and selected date style
56:36 - DatePicker component
01:14:52 - DatePickerWithFormik component
01:20:46 - DatePickerWithReactHookForm component
01:25:04 - firstDayOfTheMonth fix
