Sym454 -9000 -8000 -7000 -6000 -5000 -4000 -3000 -2000 -1000 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1340 1350 1360 1370 1380 1390 1400 1410 1420 1430 1440 1450 1460 1470 1480 1490 1500 1510 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1560 1570 1580 1590 1600 1610 1620 1630 1640 1650 1660 1700 1800 1900 2000 2024 2100 2200 3000 January February March April May June July August September October November December -- starts at 1540-12-30