using NodaTime;

using NodaTime.Serialization;

using NodaTime.Serialization.SystemTextJson;

using System;

using System.Text.Json;

public class Program

{

    internal class ScheduleItem

    {

        public LocalTime From { get; set; }

        public LocalTime To { get; set; }

    }

    public static void Main()

    {

        var options = new JsonSerializerOptions(JsonSerializerDefaults.Web).ConfigureForNodaTime(DateTimeZoneProviders.Tzdb);

        var json = "{ \"from\": \"06:45\", \"to\": \"11:00\" }";

        var scheduleItem = JsonSerializer.Deserialize<ScheduleItem>(json, options);

        Console.WriteLine($"{scheduleItem.From}, {scheduleItem.To}");

    }

}