func Test2000(t *testing.T) {
for i := range mar {
e := &mar[i]
approx := solstice.March(e.y)
vsop87 := julian.CalendarGregorianToJD(e.y, 3, e.d) +
unit.NewTime(' ', e.h, e.m, e.s).Day()
if math.Abs(vsop87-approx) > 1./24/60 {
t.Logf("mar %d: got %.5f expected %.5f", e.y, approx, vsop87)
t.Errorf("%.0f second error", math.Abs(vsop87-approx)*24*60*60)
}
}
for i := range jun {
e := &jun[i]
approx := solstice.June(e.y)
vsop87 := julian.CalendarGregorianToJD(e.y, 6, e.d) +
unit.NewTime(' ', e.h, e.m, e.s).Day()
if math.Abs(vsop87-approx) > 1./24/60 {
t.Logf("jun %d: got %.5f expected %.5f", e.y, approx, vsop87)
t.Errorf("%.0f second error", math.Abs(vsop87-approx)*24*60*60)
}
}
for i := range sep {
e := &sep[i]
approx := solstice.September(e.y)
vsop87 := julian.CalendarGregorianToJD(e.y, 9, e.d) +
unit.NewTime(' ', e.h, e.m, e.s).Day()
if math.Abs(vsop87-approx) > 1./24/60 {
t.Logf("sep %d: got %.5f expected %.5f", e.y, approx, vsop87)
t.Errorf("%.0f day error", math.Abs(vsop87-approx))
}
}
for i := range dec {
e := &dec[i]
approx := solstice.December(e.y)
vsop87 := julian.CalendarGregorianToJD(e.y, 12, e.d) +
unit.NewTime(' ', e.h, e.m, e.s).Day()
if math.Abs(vsop87-approx) > 1./24/60 {
t.Logf("dec %d: got %.5f expected %.5f", e.y, approx, vsop87)
t.Errorf("%.0f second error", math.Abs(vsop87-approx)*24*60*60)
}
}
}
func ExampleJune() {
// Example 27.a, p. 180
fmt.Printf("%.5f\n", solstice.June(1962))
// Output:
// 2437837.39245
}