Elisa/Elisa.Common/Utils/Time.cs

namespace Elisa.Common.Utils;

public static class Time
{
    public static long GetTomorrowZero()
        => new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, 0, 0, 0, DateTimeKind.Utc).AddDays(1).ToUnixSeconds();

    public static long GetCurrentMonthZero()
        => new DateTime(DateTime.Now.Year, DateTime.Now.Month, 1, 0, 0, 0, DateTimeKind.Utc).ToUnixSeconds();

    public static long GetNextMonthZero()
        => new DateTime(DateTime.Now.Year, DateTime.Now.Month, 1, 0, 0, 0, DateTimeKind.Utc).AddMonths(1).ToUnixSeconds();
}

public static class DateTimeExtensions
{
    public static long ToUnixSeconds(this DateTime dateTime)
        => (long)(dateTime - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalSeconds;
}