Time system: UTC is used by air traffic and communication services and in AIS documents. Local time is UTC+3 throughout the year (summer and winter), in accordance with permanent NOTAM A0181/22.
The following units of measurement are used in accordance with ICAO Annex 5:
| Parameter | Unit | Abbreviation |
|---|---|---|
| Distance (horizontal) | Nautical Mile | NM |
| Distance (short/visibility) | Metre / Kilometre | m / km |
| Altitude / Elevation / Height | Feet | ft |
| Speed (horizontal) | Knot | kt |
| Speed (vertical) | Feet per minute | ft/min |
| Wind speed | Knot | kt |
| Atmospheric pressure | Hectopascal | hPa |
| Temperature | Degrees Celsius | °C |
| Wind direction | Degrees magnetic/true | °M / °T |
| Time | Coordinated Universal Time | UTC |
| Fuel quantity | Kilogram | kg |
| Quantity | Unit | Abbreviation |
|---|---|---|
| Distance (horizontal) | Nautical Mile | NM |
| Distance (short) | Metre | m |
| Altitude / Flight Level | Feet | ft |
| Runway Length | Metres | m |
| Speed (airspeed) | Knots | kt |
| Speed (ground/wind) | Knots | kt |
| Visibility (RVR) | Metres | m |
| Wind direction | Degrees Magnetic | °M |
| Temperature | Degrees Celsius | °C |
| Atmospheric Pressure | Hectopascals | hPa |
| Weight | Kilograms / Tonnes | kg / t |
| Time | Hours and Minutes (UTC) | UTC |
The following public holidays are observed in the Syrian Arab Republic. Aerodrome services may operate on reduced schedules during these periods. Operators should verify service availability by consulting current NOTAMs.
| Date | Holiday |
|---|---|
| 1 January | New Year's Day |
| 18 March | Revolution Day |
| 21 March | Mother's Day |
| 17 April | Evacuation Day (Independence Day) |
| 1 May | Labour Day |
| 25 December | Christmas Day |
| Duration | Holiday | Notes |
|---|---|---|
| 3 days | Eid al-Fitr | End of Ramadan — dates follow Hijri calendar |
| 4 days | Eid al-Adha | Feast of Sacrifice — dates follow Hijri calendar |
| 1 day | Islamic New Year | 1 Muharram |
| 1 day | Prophet's Birthday (Mawlid) | 12 Rabi' al-Awwal |
Note: Islamic holiday dates are determined by the lunar calendar and confirmed by the Syrian Awqaf Ministry. Exact Gregorian dates vary annually. AIP supplements or NOTAMs will be issued for any service disruptions during these periods.
The following holidays are determined by the Islamic Hijri calendar and vary each year. Dates are published annually by government decree:
| Holiday | Approximate Period | Duration |
|---|---|---|
| Eid al-Fitr | End of Ramadan | 3 days |
| Eid al-Adha | 10th Dhul Hijjah | 4 days |
| Islamic New Year | 1st Muharram | 1 day |
| Prophet's Birthday (Mawlid) | 12th Rabi al-Awwal | 1 day |
| Service | Normal Hours | Holiday Hours |
|---|---|---|
| Government Offices | Sun–Thu: 0800–1500 LT | Closed (Fri/Sat and holidays) |
| AIS Office (OSDI) | H24 (during aerodrome operating hours) | Reduced — consult NOTAM |
| GACA Headquarters | Sun–Thu: 0830–1430 LT | Closed |
Note: During public holidays, aerodrome services (ATC, RFFS, MET) continue to operate in accordance with published hours of operation. Any operational changes are communicated via NOTAM.