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 2340 2350 2360 2370 2380 2390 2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500 2510 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2560 2570 2580 2590 2600 2610 2620 2630 2640 2650 2660 2700 2800 2900 3000 3100 3200 4000 January February March April May June July August September October November December -- starts at 2540-01-04