|
QUANTITY |
UNIT OF MEASUREMENT |
| Distance used in navigation, position reporting, etc.-generally in excess of 2 to 3 nautical miles | NAUTICAL MILES (NM) |
| Relatively short distances such as those relating to aerodrome (e.g. runway lengths) | METRES (M) |
| Altitudes, elevations and heights | FEET (FT) |
| Horizontal speed, including wind speed | KNOTS (KT) |
| Vertical speed | FEET PER MINUTE (FT/MIN) |
| Wind direction for landing and take-off | DEGREES MAGNETIC |
| Wind direction except for landing and take-off | DEGREES TRUE |
| Visibility | KILOMETRES (KM) |
| Runway visual range | METRES (M) |
| Altimeter setting | HECTOPASCALS (hPa) |
| Temperature | DEGREES CELSIUS (°C) |
| Mass (Weight) | KILOGRAMES (KG) or METRIC TON (T) |
| Time | HOURS AND MINUTES, THE DAY OF 24 HOURS BEGINNING AT MIDNIGHT (UTC) |
|
Visibility of less than 5 km may be given in metres. | |
Co-ordinated Universal Time (UTC) is used in the air traffic and communication services and in documents published by the Aeronautical Information Services. When reporting time, the nearest full minute is used, e.g., 12 hr 40 min 40 sec is reported as 1241. Time checks to aircraft are accurate within 30 sec.
VTUN — Nakhon Ratchasima / Khorat
VTSN — Nakhon Si Thammarat / Cha - Ian
The vertical reference system corresponds to mean sea level (MSL).
The geoid model used is the Earth Gravitational Model 1996 — (EGM-96).
The nationality mark for aircraft registered in Thailand consists of the letters HS. The nationality mark is followed by a Hyphen and a registration mark consisting of 3 letters, e.g., HS-TDD.
|
NAME | Date |
|---|---|
| New Year’s Day | 1 January 2025 |
| Makha Bucha Day | 12 February 2025 |
| Chakri Memorial Day | 6 April 2025 |
| Substitution for Chakri Memorial Day | 7 April 2025 |
| Songkran Festival Days | 13 - 15 April 2025 |
| Substitution for Songkran Festival Days | 16 April 2025 |
| Royal Coronation Ceremony | 4 May 2025 |
| Substitution for Royal Coronation Ceremony | 5 May 2025 |
| The Royal Ploughing Ceremony | 9 May 2025 |
| Visakha Bucha Day | 11 May 2025 |
| Substitution for Visakha Bucha Day | 12 May 2025 |
| Additional holiday Announced by Thai Govt. | 2 June 2025 |
| H.M. Queen Suthida Bajrasudhabimalalakshana's Birthday | 3 June 2025 |
| Asarnha Bucha Day | 10 July 2025 |
| Buddhist Lent Day | 11 July 2025 |
| H.M. King Maha Vajiralongkorn Phra Vajiraklaochaoyuhua’s Birthday | 28 July 2025 |
| Additional holiday Announced by Thai Govt. | 11 August 2025 |
| H.M. Queen Sirikit The Queen Mother’s Birthday and National Mother Day | 12 August 2025 |
| H.M. King Bhumibol Adulyadej The Great Memorial Day | 13 October 2025 |
| King Chulalongkorn Memorial Day | 23 October 2025 |
| H.M. King Bhumibol Adulyadej The Great's Birthday, National Day and National Father Day | 5 December 2025 |
| Constitution Day | 10 December 2025 |
| New Year’s Eve | 31 December 2025 |