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The Pilots Desk
Small airport

Thayer Aviation Airport

ICAO 53CN🇺🇸 Grimes
Coordinates
39.0749°N, 121.9180°W
Elevation
54 ft (16 m)
Type
Small airport
Country
🇺🇸 United States
Region
US-CA
Time zone
Los Angeles(UTC-07:00)
Magnetic variation
13.1° E

Daylight today(Jul 16, 2026, local time)

Civil dawn
05:24
Sunrise
05:55
Sunset
20:33
Civil dusk
21:04

About 14h 38m 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 Thayer Aviation Airport

Thayer Aviation Airport is a small airport in Grimes, United States. It sits at an elevation of 54 ft (16 m) and has 1 runway, the longest 1,800 ft / 549 m with a hard surface. It observes America/Los Angeles local time. The nearest airport is Cecil Ranch Airport (US-12704), about 0.7 nm to the nne.

Summary generated from this airport’s structured data — reference only.

Map

Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.

Runways (1)

RunwayLengthWidthSurfaceLightingStatus
NW / SE1,800 ft / 549 m60 ftAsphUnlitOpen

Nearby airports

Cecil Ranch AirportUS-12704
0.7 nm NNE (23°)
BalsdonUS-12889
2.2 nm SW (223°)
Sanborn Airport38CN
2.6 nm NE (37°)
Moronis Airport92CL
3.6 nm ENE (62°)
Colusa County AirportKO08
7.2 nm NNW (331°)
Pacific Valley Aviation AirportUS-2410
7.7 nm W (270°)

Great-circle distance and true bearing from Thayer Aviation Airport.

Live tracking (FR24) Open in Maps
🇺🇸 More airports in United States📘 Flying in the United States: a pilot's guide

Frequently asked questions

Where is Thayer Aviation Airport located?

Thayer Aviation Airport is small airport located in Grimes, United States, at an elevation of 54 ft (16 m).

How many runways does Thayer Aviation Airport have?

Thayer Aviation Airport has 1 runway, the longest being 1,800 ft / 549 m.

What time zone is Thayer Aviation Airport in?

Thayer Aviation Airport is in the America/Los Angeles time zone (UTC-07:00).

What is the magnetic variation at Thayer Aviation Airport?

The magnetic variation (declination) at Thayer Aviation Airport is approximately 13.1° E, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.

What airports are near Thayer Aviation Airport?

The nearest airport to Thayer Aviation Airport is Cecil Ranch Airport (US-12704), about 0.7 nm to the nne, followed by Balsdon and Sanborn Airport.

Is the information on this page suitable for flight planning?

No. Thayer Aviation Airport data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.