Ascension Seton Williamson Heliport
Daylight today(Aug 31, 2026, local time)
About 12h 49m of daylight. Civil twilight (dawn/dusk) approximates the FAA definition of night for logging and currency. Times are computed and approximate — verify with official sources.
About Ascension Seton Williamson Heliport
Ascension Seton Williamson Heliport is a heliport in Round Rock, United States. It sits at an elevation of 815 ft (248 m). It observes America/Chicago local time. The nearest airport is Tri-Modal Air Park (30TA), about 3.6 nm to the wnw.
Summary generated from this airport’s structured data — reference only.
Live traffic nearby
Aircraft currently within ~40 nm, from live ADS-B. Positions are approximately real-time — not for navigation.
Live ADS-B by adsb.lol & the OpenSky Network. Not for navigation.
Map
Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.
Runways (0)
No runway data recorded for this airport.
Tall obstacles nearby
| Obstacle | Height AGL | Top (MSL) | Lit |
|---|---|---|---|
| Obstacle | — | 646 ft | — |
Tallest obstacles within ~10 nm. Data via OpenAIP. Reference only — consult official charts.
Nearby airports
Great-circle distance and true bearing from Ascension Seton Williamson Heliport.
Frequently asked questions
Where is Ascension Seton Williamson Heliport located?
Ascension Seton Williamson Heliport is heliport located in Round Rock, United States, at an elevation of 815 ft (248 m).
What time zone is Ascension Seton Williamson Heliport in?
Ascension Seton Williamson Heliport is in the America/Chicago time zone (UTC-05:00).
What is the magnetic variation at Ascension Seton Williamson Heliport?
The magnetic variation (declination) at Ascension Seton Williamson Heliport is approximately 3° E, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.
What airports are near Ascension Seton Williamson Heliport?
The nearest airport to Ascension Seton Williamson Heliport is Tri-Modal Air Park (30TA), about 3.6 nm to the wnw, followed by Cross-Country Estates Airport and Bar 3 Ranch Airport.
Is the information on this page suitable for flight planning?
No. Ascension Seton Williamson Heliport data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.