x1 (event/state) is in the fourth month/April of a year x2 in system x3.
lo masnvo = lo se ma'irdetri be li vo. See also detri, detke'u, masti; masnpa, masnre, masnci, masnmu, masnxa, masnze, masnbi, masnso, masndau, masnfei, masngai, masnjau, masnrei or masnxei, masnvai.