Abramelin, on 05 January 2012 - 05:04 AM, said:
Did any of you check if you also end up at 1066 AD if you substract whatever you substract?
See cormac's answer then:
Halley's orbital period over the last three centuries has been between 75 and 76 years, though it has varied between 74 and 79 years since 240 BCE
1P/−239 K1, −239 (25 May 240 BCE)
1P/−163 U1, −163 (12 November 164 BCE)
1P/−86 Q1, −86 (6 August 87 BCE)
1P/−11 Q1, −11 (10 October 12 BCE)
1P/66 B1, 66 (25 January 66 CE)
1P/141 F1, 141 (22 March 141)
1P/218 H1, 218 (17 May 218)
1P/295 J1, 295 (20 April 295)
1P/374 E1, 374 (16 February 374)
1P/451 L1, 451 (28 June 451)
1P/530 Q1, 530 (27 September 530)
1P/607 H1, 607 (15 March 607)
1P/684 R1, 684 (2 October 684)
1P/760 K1, 760 (20 May 760)
1P/837 F1, 837 (28 February 837)
1P/912 J1, 912 (18 July 912)
1P/989 N1, 989 (5 September 989)
1P/1066 G1, 1066 (20 March 1066)
1P/1145 G1, 1145 (18 April 1145)
1P/1222 R1, 1222 (28 September 1222)
1P/1301 R1, 1301 (25 October 1301)
1P/1378 S1, 1378 (10 November 1378)
1P/1456 K1, 1456 (9 June 1456)
1P/1531 P1, 1531 (26 August 1531)
1P/1607 S1, 1607 (27 October 1607)
1P/1682 Q1, 1682 (15 September 1682)
1P/1758 Y1, 1759 I (13 March 1759)
1P/1835 P1, 1835 III (16 November 1835)
1P/1909 R1, 1910 II, 1909c (20 April 1910)
1P/1982 U1, 1986 III, 1982i (9 February 1986)
http://en.wikipedia....ley's_Comet
Since I started at 240BC, I didn't get to see if I landed on 1066AD.
---------------------
Halley's [HAL-lee] Comet has been know since at least 240 BC and possibly since 1059 BC. Its most famous appearance was in 1066 AD when it was seen right before the Battle of Hastings.
http://www.solarview.../eng/halley.htm
May have been seen since 1059BC.
Edited by The Puzzler, 05 January 2012 - 08:20 AM.