Meridian Nav

• Amplitude compass check — verify gyro/compass error against the rising or setting Sun. Event time and declination are computed automatically. • New Latitude panel (Noon / Polaris) — latitude by the noon Sun with a live meridian-passage predictor, or by Polaris at twilight. No tables needed. • Celestial fix plot — reduced sights now draw on a plotting sheet: lines of position, the least-squares fix and its scatter, at a glance. • Moon phase — the Sun / Moon screen now shows an illustrated phase disc with the illuminated fraction and the Moon's age. • Higher-resolution offline chart — coastlines sharpen automatically as you zoom in. • Clock Plan improvements — zone-change scheduling is now DST-aware and aligns each change to the ship's actual local zone. • Built-in glossary — every calculator's help now explains the terms and abbreviations it uses (Zn, Ho, intercept, amplitude, and more). • Celestial engine validated against JPL ephemeris data — Sun, Moon, planets and 63 navigation stars agree to arc-minute accuracy.