Sym454 -8000 -7000 -6000 -5000 -4000 -3000 -2000 -1000 0 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2026 2100 2200 2300 2400 2460 2470 2480 2490 2500 2510 2520 2530 2540 2550 2560 2570 2580 2590 2600 2610 2620 2630 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2680 2690 2700 2710 2720 2730 2740 2750 2760 2770 2780 2800 2900 3000 3100 3200 3300 4000 January February March April May June July August September October November December -- starts at 2660-01-02