skymap.sh — the night sky above you, as text

  curl skymap.sh                      your sky now, located by IP
  curl skymap.sh/Zurich               a named city
  curl skymap.sh/47.38,8.54           any coordinates

If the ISS has a real pass overhead right now, it's marked on the chart
automatically -- no flag needed.

VIEWS
  ?view=horizon    panorama, N-E-S-W-N, altitude 0-70° + zenith inset (default)
  ?view=disc       whole sky as a circle, north up, east left
  ?facing=NW       140° window centred on a bearing, shapes undistorted
  ?span=90         window width, 90-344° (only with facing)

FIND
  ?find=Venus      frame one object, with directions in fists
  ?find=Big+Dipper works for planets, Sun, Moon, named stars, asterisms
                   tells you if you can see it, and if not, when you can

OPTIONS
  ?t=2026-08-12T23:00   local time at that place (default: now)
  ?night=1              force the star chart even while the Sun is up
  ?nolines=1            stars only, no asterism lines
  ?dso=1                overlay galaxies, nebulae and clusters to mag 11 (Revised NGC)
  ?quadrant=A           crop to one lettered cell of the horizon view --
                        letters are marked on the chart, rerun adding the
                        one you want to zoom in (horizon view only)
  ?format=json          the same facts, structured
  ?plain=1              no ANSI colour
  ?w=100                render at N columns wide instead of the default

  10° is a closed fist at arm's length, so the gridlines are a ruler.

  Fit any terminal automatically, add to your shell profile:
    skymap() { curl "skymap.sh/${1:-}?w=$(tput cols)"; }

Stars: Yale Bright Star Catalogue. Planets: JPL approximate elements.
Sun and Moon: Meeus. Satellites: CelesTrak.