export type Period = "day" | "week" | "month" | "year";
export type N = number;
export type TimeUnit = "milliseconds" | "seconds" | "minutes" | "hours" | "days" | "weeks" | "years";
export type Hours =
  | 0
  | 1
  | 2
  | 3
  | 4
  | 5
  | 6
  | 7
  | 8
  | 9
  | 10
  | 11
  | 12
  | 13
  | 14
  | 15
  | 16
  | 17
  | 18
  | 19
  | 20
  | 21
  | 22
  | 23
  | 24;

export type HalfHours =
  | 0
  | 0.5
  | 1
  | 1.5
  | 2
  | 2.5
  | 3
  | 3.5
  | 4
  | 4.5
  | 5
  | 5.5
  | 6
  | 6.5
  | 7
  | 7.5
  | 8
  | 8.5
  | 9
  | 9.5
  | 10
  | 10.5
  | 11
  | 11.5
  | 12
  | 12.5
  | 13
  | 13.5
  | 14
  | 14.5
  | 15
  | 15.5
  | 16
  | 16.5
  | 17
  | 17.5
  | 18
  | 18.5
  | 19
  | 19.5
  | 20
  | 20.5
  | 21
  | 21.5
  | 22
  | 22.5
  | 23
  | 23.5;