| Capital City | Tehran |
| What time is it? | does not observe daylight savings time |
| Capital location | 35 42 N, 51 25 E |
| Capital - history | various explanations of the city's name have been proffered, but the most plausible states that it derives from the Persian words tah meaning "end or bottom" and ran meaning "[mountain] slope" to signify "bottom of the mountain slope"; Tehran lies at the bottom slope of the Elburz Mountains |
| Capital - time difference | UTC+3.5 (8.5 hours ahead of Washington, DC) |