Understanding >Astronomical calculations
2027.-CALENDAR-. JANUARY FEBRUARY MARCH ------------------------------ ------------------------------ ------------------------------ DAY DAY & NO DAY DAY & NO DAY DAY & NO ------------------- --------- ------------------- --------- ------------------- --------- OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE MOIS ANNEE ELAPSED WEEK MOIS ANNEE ELAPSED WEEK MOIS ANNEE ELAPSED WEEK A 12H TU A 12H TU AT 12H UTC ------------------- --------- ------------------- --------- ------------------- --------- 246 246 246 1 1 1407 FRI. 1 32 1438 MON. ---- 1 60 1466 MON. ---- 2 2 1408 SAT. 2 33 1439 TUE. 2 61 1467 TUE. 3 3 1409 SUN. ---- 3 34 1440 WED. 3 62 1468 WED. 4 4 1410 MON. ---- 4 35 1441 THU. 5 ! 4 63 1469 THU. 9 ! 5 5 1411 TUE. 5 36 1442 FRI. 5 64 1470 FRI. 6 6 1412 WED. 6 37 1443 SAT. 6 65 1471 SAT. 7 7 1413 THU. 1 ! 7 38 1444 SUN. ---- 7 66 1472 SUN. ---- 8 8 1414 FRI. 8 39 1445 MON. ---- 8 67 1473 MON. ---- 9 9 1415 SAT. 9 40 1446 TUE. 9 68 1474 TUE. 10 10 1416 SUN. ---- 10 41 1447 WED. 10 69 1475 WED. 11 11 1417 MON. ---- 11 42 1448 THU. 6 ! 11 70 1476 THU. 10 ! 12 12 1418 TUE. 12 43 1449 FRI. 12 71 1477 FRI. 13 13 1419 WED. 13 44 1450 SAT. 13 72 1478 SAT. 14 14 1420 THU. 2 ! 14 45 1451 SUN. ---- 14 73 1479 SUN. ---- 15 15 1421 FRI. 15 46 1452 MON. ---- 15 74 1480 MON. ---- 16 16 1422 SAT. 16 47 1453 TUE. 16 75 1481 TUE. 17 17 1423 SUN. ---- 17 48 1454 WED. 17 76 1482 WED. 18 18 1424 MON. ---- 18 49 1455 THU. 7 ! 18 77 1483 THU. 11 ! 19 19 1425 TUE. 19 50 1456 FRI. 19 78 1484 FRI. 20 20 1426 WED. 20 51 1457 SAT. 20 79 1485 SAT. 21 21 1427 THU. 3 ! 21 52 1458 SUN. ---- 21 80 1486 SUN. ---- 22 22 1428 FRI. 22 53 1459 MON. ---- 22 81 1487 MON. ---- 23 23 1429 SAT. 23 54 1460 TUE. 23 82 1488 TUE. 24 24 1430 SUN. ---- 24 55 1461 WED. 24 83 1489 WED. 25 25 1431 MON. ---- 25 56 1462 THU. 8 ! 25 84 1490 THU. 12 ! 26 26 1432 TUE. 26 57 1463 FRI. 26 85 1491 FRI. 27 27 1433 WED. 27 58 1464 SAT. 27 86 1492 SAT. 28 28 1434 THU. 4 ! 28 59 1465 SUN. ---- 28 87 1493 SUN. ---- 29 29 1435 FRI. 29 88 1494 MON. ---- 30 30 1436 SAT. 30 89 1495 TUE. 31 31 1437 SUN. ---- 31 90 1496 WED. ------------------------------ ------------------------------ ------------------------------ 2027.-CALENDAR-. APRIL MAY JUNE ------------------------------ ------------------------------ ------------------------------ DAY DAY & NO DAY DAY & NO DAY DAY & NO ------------------- --------- ------------------- --------- ------------------- --------- OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE MOIS ANNEE ELAPSED WEEK MOIS ANNEE ELAPSED WEEK MOIS ANNEE ELAPSED WEEK A 12H TU A 12H TU AT 12H UTC ------------------- --------- ------------------- --------- ------------------- --------- 246 246 246 1 91 1497 THU. 13 ! 1 121 1527 SAT. 1 152 1558 TUE. 2 92 1498 FRI. 2 122 1528 SUN. ---- 2 153 1559 WED. 3 93 1499 SAT. 3 123 1529 MON. ---- 3 154 1560 THU. 22 ! 4 94 1500 SUN. ---- 4 124 1530 TUE. 4 155 1561 FRI. 5 95 1501 MON. ---- 5 125 1531 WED. 5 156 1562 SAT. 6 96 1502 TUE. 6 126 1532 THU. 18 ! 6 157 1563 SUN. ---- 7 97 1503 WED. 7 127 1533 FRI. 7 158 1564 MON. ---- 8 98 1504 THU. 14 ! 8 128 1534 SAT. 8 159 1565 TUE. 9 99 1505 FRI. 9 129 1535 SUN. ---- 9 160 1566 WED. 10 100 1506 SAT. 10 130 1536 MON. ---- 10 161 1567 THU. 23 ! 11 101 1507 SUN. ---- 11 131 1537 TUE. 11 162 1568 FRI. 12 102 1508 MON. ---- 12 132 1538 WED. 12 163 1569 SAT. 13 103 1509 TUE. 13 133 1539 THU. 19 ! 13 164 1570 SUN. ---- 14 104 1510 WED. 14 134 1540 FRI. 14 165 1571 MON. ---- 15 105 1511 THU. 15 ! 15 135 1541 SAT. 15 166 1572 TUE. 16 106 1512 FRI. 16 136 1542 SUN. ---- 16 167 1573 WED. 17 107 1513 SAT. 17 137 1543 MON. ---- 17 168 1574 THU. 24 ! 18 108 1514 SUN. ---- 18 138 1544 TUE. 18 169 1575 FRI. 19 109 1515 MON. ---- 19 139 1545 WED. 19 170 1576 SAT. 20 110 1516 TUE. 20 140 1546 THU. 20 ! 20 171 1577 SUN. ---- 21 111 1517 WED. 21 141 1547 FRI. 21 172 1578 MON. ---- 22 112 1518 THU. 16 ! 22 142 1548 SAT. 22 173 1579 TUE. 23 113 1519 FRI. 23 143 1549 SUN. ---- 23 174 1580 WED. 24 114 1520 SAT. 24 144 1550 MON. ---- 24 175 1581 THU. 25 ! 25 115 1521 SUN. ---- 25 145 1551 TUE. 25 176 1582 FRI. 26 116 1522 MON. ---- 26 146 1552 WED. 26 177 1583 SAT. 27 117 1523 TUE. 27 147 1553 THU. 21 ! 27 178 1584 SUN. ---- 28 118 1524 WED. 28 148 1554 FRI. 28 179 1585 MON. ---- 29 119 1525 THU. 17 ! 29 149 1555 SAT. 29 180 1586 TUE. 30 120 1526 FRI. 30 150 1556 SUN. ---- 30 181 1587 WED. 31 151 1557 MON. ---- ------------------------------ ------------------------------ ------------------------------ 2027.-CALENDAR-. JULY AUGUST SEPTEMBER ------------------------------ ------------------------------ ------------------------------ DAY DAY & NO DAY DAY & NO DAY DAY & NO ------------------- --------- ------------------- --------- ------------------- --------- OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE MOIS ANNEE ELAPSED WEEK MOIS ANNEE ELAPSED WEEK MOIS ANNEE ELAPSED WEEK A 12H TU A 12H TU AT 12H UTC ------------------- --------- ------------------- --------- ------------------- --------- 246 246 246 1 182 1588 THU. 26 ! 1 213 1619 SUN. ---- 1 244 1650 WED. 2 183 1589 FRI. 2 214 1620 MON. ---- 2 245 1651 THU. 35 ! 3 184 1590 SAT. 3 215 1621 TUE. 3 246 1652 FRI. 4 185 1591 SUN. ---- 4 216 1622 WED. 4 247 1653 SAT. 5 186 1592 MON. ---- 5 217 1623 THU. 31 ! 5 248 1654 SUN. ---- 6 187 1593 TUE. 6 218 1624 FRI. 6 249 1655 MON. ---- 7 188 1594 WED. 7 219 1625 SAT. 7 250 1656 TUE. 8 189 1595 THU. 27 ! 8 220 1626 SUN. ---- 8 251 1657 WED. 9 190 1596 FRI. 9 221 1627 MON. ---- 9 252 1658 THU. 36 ! 10 191 1597 SAT. 10 222 1628 TUE. 10 253 1659 FRI. 11 192 1598 SUN. ---- 11 223 1629 WED. 11 254 1660 SAT. 12 193 1599 MON. ---- 12 224 1630 THU. 32 ! 12 255 1661 SUN. ---- 13 194 1600 TUE. 13 225 1631 FRI. 13 256 1662 MON. ---- 14 195 1601 WED. 14 226 1632 SAT. 14 257 1663 TUE. 15 196 1602 THU. 28 ! 15 227 1633 SUN. ---- 15 258 1664 WED. 16 197 1603 FRI. 16 228 1634 MON. ---- 16 259 1665 THU. 37 ! 17 198 1604 SAT. 17 229 1635 TUE. 17 260 1666 FRI. 18 199 1605 SUN. ---- 18 230 1636 WED. 18 261 1667 SAT. 19 200 1606 MON. ---- 19 231 1637 THU. 33 ! 19 262 1668 SUN. ---- 20 201 1607 TUE. 20 232 1638 FRI. 20 263 1669 MON. ---- 21 202 1608 WED. 21 233 1639 SAT. 21 264 1670 TUE. 22 203 1609 THU. 29 ! 22 234 1640 SUN. ---- 22 265 1671 WED. 23 204 1610 FRI. 23 235 1641 MON. ---- 23 266 1672 THU. 38 ! 24 205 1611 SAT. 24 236 1642 TUE. 24 267 1673 FRI. 25 206 1612 SUN. ---- 25 237 1643 WED. 25 268 1674 SAT. 26 207 1613 MON. ---- 26 238 1644 THU. 34 ! 26 269 1675 SUN. ---- 27 208 1614 TUE. 27 239 1645 FRI. 27 270 1676 MON. ---- 28 209 1615 WED. 28 240 1646 SAT. 28 271 1677 TUE. 29 210 1616 THU. 30 ! 29 241 1647 SUN. ---- 29 272 1678 WED. 30 211 1617 FRI. 30 242 1648 MON. ---- 30 273 1679 THU. 39 ! 31 212 1618 SAT. 31 243 1649 TUE. ------------------------------ ------------------------------ ------------------------------ 2027.-CALENDAR-. OCTOBER NOVEMBER DECEMBRE ------------------------------ ------------------------------ ------------------------------ DAY DAY & NO DAY DAY & NO DAY DAY & NO ------------------- --------- ------------------- --------- ------------------- --------- OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE OF OF THE JULIAN OF THE MOIS ANNEE ELAPSED WEEK MOIS ANNEE ELAPSED WEEK MOIS ANNEE ELAPSED WEEK A 12H TU A 12H TU AT 12H UTC ------------------- --------- ------------------- --------- ------------------- --------- 246 246 246 1 274 1680 FRI. 1 305 1711 MON. ---- 1 335 1741 WED. 2 275 1681 SAT. 2 306 1712 TUE. 2 336 1742 THU. 48 ! 3 276 1682 SUN. ---- 3 307 1713 WED. 3 337 1743 FRI. 4 277 1683 MON. ---- 4 308 1714 THU. 44 ! 4 338 1744 SAT. 5 278 1684 TUE. 5 309 1715 FRI. 5 339 1745 SUN. ---- 6 279 1685 WED. 6 310 1716 SAT. 6 340 1746 MON. ---- 7 280 1686 THU. 40 ! 7 311 1717 SUN. ---- 7 341 1747 TUE. 8 281 1687 FRI. 8 312 1718 MON. ---- 8 342 1748 WED. 9 282 1688 SAT. 9 313 1719 TUE. 9 343 1749 THU. 49 ! 10 283 1689 SUN. ---- 10 314 1720 WED. 10 344 1750 FRI. 11 284 1690 MON. ---- 11 315 1721 THU. 45 ! 11 345 1751 SAT. 12 285 1691 TUE. 12 316 1722 FRI. 12 346 1752 SUN. ---- 13 286 1692 WED. 13 317 1723 SAT. 13 347 1753 MON. ---- 14 287 1693 THU. 41 ! 14 318 1724 SUN. ---- 14 348 1754 TUE. 15 288 1694 FRI. 15 319 1725 MON. ---- 15 349 1755 WED. 16 289 1695 SAT. 16 320 1726 TUE. 16 350 1756 THU. 50 ! 17 290 1696 SUN. ---- 17 321 1727 WED. 17 351 1757 FRI. 18 291 1697 MON. ---- 18 322 1728 THU. 46 ! 18 352 1758 SAT. 19 292 1698 TUE. 19 323 1729 FRI. 19 353 1759 SUN. ---- 20 293 1699 WED. 20 324 1730 SAT. 20 354 1760 MON. ---- 21 294 1700 THU. 42 ! 21 325 1731 SUN. ---- 21 355 1761 TUE. 22 295 1701 FRI. 22 326 1732 MON. ---- 22 356 1762 WED. 23 296 1702 SAT. 23 327 1733 TUE. 23 357 1763 THU. 51 ! 24 297 1703 SUN. ---- 24 328 1734 WED. 24 358 1764 FRI. 25 298 1704 MON. ---- 25 329 1735 THU. 47 ! 25 359 1765 SAT. 26 299 1705 TUE. 26 330 1736 FRI. 26 360 1766 SUN. ---- 27 300 1706 WED. 27 331 1737 SAT. 27 361 1767 MON. ---- 28 301 1707 THU. 43 ! 28 332 1738 SUN. ---- 28 362 1768 TUE. 29 302 1708 FRI. 29 333 1739 MON. ---- 29 363 1769 WED. 30 303 1709 SAT. 30 334 1740 TUE. 30 364 1770 THU. 52 ! 31 304 1710 SUN. ---- 31 365 1771 FRI. ------------------------------ ------------------------------ ------------------------------