Convert unix time to skyblock time

pickletime.rs

const TIME_OFFSET: f64 = 1559829300.0;

pub fn unix_to_date(mut unix: f64) -> String {
	let time = (unix - TIME_OFFSET) as u64;

	let year = time / 12 / 31 / 1200;
	let month = (time / 31 / 1200) % 12;
	let day = ((time / 1200) % 31) + 1;

	format!("Year {}, {} {}{}", year, month_str(month), day, day_suffix(day))
}

pub fn unix_to_time(mut unix: f64) -> String {
	let time = (unix - TIME_OFFSET) as u64;

	let hour = ((time / 1200) * 24) % 24;
	let minute = ((time / 1200) * 24 * 60) % 60;

	format!("{:0<2}:{:0<2}{}", hour_fmt(hour), minute, time_suffix(hour))
}


fn day_suffix(day: u64) -> &'static str {
	if (day / 10) % 10 == 1 {
		return "th";
	}

	match day % 10 {
		1 => "st",
		2 => "nd",
		3 => "rd",
		_ => "th",
	}
}

fn hour_fmt(mut hour: u64) -> u64 {
	hour %= 12;
	if hour == 0 {
		return 12;
	}
	return hour;
}

fn time_suffix(hour: u64) -> &'static str {
	if hour < 12 {
		return "am";
	}
	return "pm";
}

fn month_str(month: u64) -> &'static str {
	match month {
		0 => "Early Spring",
		1 => "Spring",
		2 => "Late Spring",
		3 => "Early Summer",
		4 => "Summer",
		5 => "Late Summer",
		6 => "Early Autumn",
		7 => "Autumn",
		8 => "Late Autumn",
		9 => "Early Winter",
		10 => "Winter",
		_ => "Late Winter",
	}
}