Irhheen was a month of the year in the calendar of the Vulcan civilization. On 9 Irhheen 139954 (18 January - 19 January, 22 BC), the people of Vulcan made first contact with the Orions. (TOS - Rihannsu novel: The Romulan Way)
Connection[]
| Months of the Year | |
|---|---|
| Earth months (Gregorian calendar) | January • February • March • April • May • June • July • August • September • October • November • December |
| Mars months (Zubrin calendar) | Leo • Libra • Capricorn |
| Qo'noS months | Doqath • Lo'Bral • Maktag • Merruthj • nay'Poq • Soo'jen • Xan'lahr |
| Vulcan/Romulan months | Z'at • D'ruh • K'ri'Brax • re'Ti'Khutai • T'keKhuti • Khuti • ta'Krat • K'ri'lior • et'Khior • T'ke'Tas • Tasmeen • Havreen • Sharveen • Ahhahr • Irhheen • Ailat • T'Lent |
| Ferenginar months | Glorpober |
| Andorian months | Bocaj |