LKS92 konvertācija uz platuma un garuma grādiem

Konvertēt var ar proj komandu cs2cs, piemēram, Rīga (Rīgas 3. vidusskola):
http://www.balticmaps.eu/?lang=lv&draw_hash=jlfstt&centerx=506642&centery=6311466&zoom=-2&layer=map

echo 506642 6311466 | cs2cs +proj=tmerc +lat_0=0 +lon_0=24 +k=0.999600 +x_0=500000 +y_0=0 \
+ellps=GRS80 +towgs84=-199.87,74.79,246.62,0,0,0,0 +units=m -f "%.7f"
24.1091813 56.9467706 0.0000000

# Vai
echo 506642 6311466 | cs2cs +proj=tmerc +lat_0=0 +lon_0=24 +k=0.9996 +x_0=500000 +y_0=0 \
+ellps=GRS80 +units=m +to=WGS84 -f "%.6f"
24.109181 56.946771 0.000000

# Vai 
echo 506642 6311466 | cs2cs +proj=tmerc +lat_0=0 +lon_0=24 +k=0.9996 +x_0=500000 +y_0=0 \
+ellps=GRS80 +units=m  +to=WGS84 
24d6'33.053"E 56d56'48.374"N 0.000