| 31st | According to the terms of the contract, your payment was due on May 31st. |
| 31st | Let me remind you again that March 31st is the due date. |
| 大晦日(P);大みそか | [おおみそか, oomisoka] (n-t) New Year's Eve; December 31st; (P) #17,040 [Add to Longdo] |
| 甲午 | [きのえうま;こうご, kinoeuma ; kougo] (n) (See 干支) 31st of the sexagenary cycle [Add to Longdo] |
| 大年;大歳 | [おおとし;おおどし, ootoshi ; oodoshi] (n) (1) (arch) (See 大晦日) New Year's Eve; December 31st; (2) (arch) (See 太歳・たいさい・2) Jupiter (planet) [Add to Longdo] |