dead of night; middle of the night; midnight; third quarter of the hour of the ox (2-2:30am, or 3-3:30am)
cursing ritual where one visits a shrine at 2am and nails a doll representing a person to a tree, praying for said person's death
day of the Ox (esp. in midsummer or midwinter)
Earth Ox (26th year of the sexagenary cycle, e.g. 1949, 2009, 2069)
Water Ox (50th year of the sexagenary cycle, e.g. 1913, 1973, 2033)
Wood Ox (2nd year of the sexagenary cycle, e.g. 1925, 1985, 2045)
Metal Ox (38th year of the sexagenary cycle, e.g. 1961, 2021, 2081)
day of the ox in midsummer (during the hottest season); dog days of summer
cursing ritual where one visits a shrine at 2am and nails a doll representing a person to a tree, praying for said person's death
hour of the Ox (around 2am, 1-3am, or 2-4am)