Sym454 -9000 -8000 -7000 -6000 -5000 -4000 -3000 -2000 -1000 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1380 1390 1400 1410 1420 1430 1440 1450 1460 1470 1480 1490 1500 1510 1520 1530 1540 1550 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1600 1610 1620 1630 1640 1650 1660 1670 1680 1690 1700 1800 1900 2000 2024 2100 2200 3000 January February March April May June July August September October November December -- 1 [Monday(0)] 2 [Tuesday(1)] 3 [Wednesday(2)] 4 [Thursday(3)] 5 [Friday(4)] 6 [Saturday(5)] 7 [Sunday(6)] 8 [Monday(0)] 9 [Tuesday(1)] 10 [Wednesday(2)] 11 [Thursday(3)] 12 [Friday(4)] 13 [Saturday(5)] 14 [Sunday(6)] 15 [Monday(0)] 16 [Tuesday(1)] 17 [Wednesday(2)] 18 [Thursday(3)] 19 [Friday(4)] 20 [Saturday(5)] 21 [Sunday(6)] 22 [Monday(0)] 23 [Tuesday(1)] 24 [Wednesday(2)] 25 [Thursday(3)] 26 [Friday(4)] 27 [Saturday(5)] 28 [Sunday(6)] -- is 1580-03-23