// cross-calendar-comparison.el — same Instant under two different calendars
// produces identical cal_to_instant() outputs. Calendar choice does not change
// the underlying instant — only the projection.

fn run_test() -> Int {
    let i: Instant = unix_seconds(1782216000)
    let z: Zone = zone("America/New_York")
    let earth: Calendar = earth_calendar(z)
    let mars: Calendar = mars_calendar()
    let ct_earth: CalendarTime = in_calendar(i, earth)
    let ct_mars: CalendarTime = in_calendar(i, mars)
    let i_earth: Instant = cal_to_instant(ct_earth)
    let i_mars: Instant = cal_to_instant(ct_mars)
    if i_earth == i_mars {
        return 1
    }
    return 0
}

fn main() -> Void {
    println(int_to_str(run_test()))
}