DeeCecil -10000 -9000 -8000 -7000 -6000 -5000 -4000 -3000 -2000 -1000 -900 -800 -700 -600 -500 -400 -300 -200 -100 0 100 200 300 400 440 450 460 470 480 490 500 510 520 530 540 550 560 570 580 590 600 610 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 660 670 680 690 700 710 720 730 740 750 760 800 900 1000 1100 1200 1300 2000 2024 January February March April May June July August September October November December -- starts at 0640-01-02