Romulan calendar

• Units
  • Ewa (Romulan second) (ENT Novel: The Good That Men Do)
  • Siure (Romulan minute) (ENT Novel: The Good That Men Do)
  • Dierha (Romulan hour) (ENT Novel: The Good That Men Do)
  • Eisae (Romulan day) (ENT Novel: The Good That Men Do)
  • Khaidoa (Romulan month) (ENT Novel: The Good That Men Do)
  • Fvheisn (Romulan year) (ENT Novel: The Good That Men Do)
• Months
  • Tasmeen (ENT Novel: The Good That Men Do)
    • At least twenty-one days (ENT Novel: The Good That Men Do)
  • Havreen (ENT Novel: The Good That Men Do)
    • At least eight days (ENT Novel: The Good That Men Do)
    • Immediately follows Tasmeen
  • K'ri'Brax (ENT Novel: Kobayashi Maru)
    • At least 33 days (ENT Novel: Kobayashi Maru)
    • "A few khaidoa" after Havreen (ENT Novel: Kobayashi Maru)
      • Between February 23, 2155 (Coridan Prime attack, late Tasmeen/Havreen), and K'ri'Brax 29 (ENT Novel: Kobayashi Maru)
    • February 21, 2155 (late Tasmeen/early Havreen) "two khaidoa" before K'ri'Brax 33 (ENT Novel: Kobayashi Maru)
      • First event Ehrein's rescue from Rator II, Chapter 38 of The Good That Men Do
    • "Some three khaidoa" between Tasmeen 5 and K'ri'Brax 33 (ENT Novel: Kobayashi Maru)
      • Between Cunaehr's death, chapter 1 of The Good That Men Do, and chapter 11 of Kobayashi Maru
• Correspondences
  • Nearly three fvheisn between April 17, 2152 and early February 2155 (ENT Novel: The Good That Men Do)
    • Between "Minefield" and chapter 4 of The Good That Men Do
  • Mid-November 2154 "the previous fvheisn" from July 2155 (ENT Novel: Kobayashi Maru)
    • Between "Babel One"/"United"/"The Aenar" and chapter 11 of Kobayashi Maru
  • Tasmeen 5, year unknown > January 24, 2155 (ENT Novel: The Good That Men Do)
  • January 30, 2155 > Tasmeen 11, year unknown > February 3, 2155 (ENT Novel: The Good That Men Do)
  • Tasmeen 21, year unknown = February 9, 2155 (ENT Novel: The Good That Men Do)
  • March 3, 2155 > Havreen 8, year unknown > March 21, 2155 (ENT Novel: The Good That Men Do)
  • July 13, 2155 > K'ri'Brax 29, year unknown > July 14, 2155 (ENT Novel: Kobayashi Maru)
  • July 14, 2155 > K'ri'Brax 30, year unknown > July 15, 2155 (ENT Novel: Kobayashi Maru)
  • July 15, 2155 = K'ri'Brax 31, year unknown (ENT Novel: Kobayashi Maru)
  • July 16, 2155 > K'ri'Brax 33, year unknown > July 17, 2155 (ENT Novel: Kobayashi Maru)