1971/1/1: 010171 = 010:171 = each is palindrome 1971/1/2: 020171 = 020:171 = each is palindrome 1971/1/3: 030171 = 030:171 = each is palindrome 1971/1/4: 040171 = 040:171 = each is palindrome 1971/1/5: 050171 = 050:171 = each is palindrome 1971/1/6: 060171 = 060:171 = each is palindrome 1971/1/7: 070171 = 070:171 = each is palindrome 1971/1/7: 1771 = palindrome 1971/1/7: 71017 = palindrome 1971/1/7: 7117 = palindrome 1971/1/7: 7171 = cyclic permutation symmetric 1971/1/8: 080171 = 080:171 = each is palindrome 1971/1/9: 090171 = 090:171 = each is palindrome 1971/1/16: 011671 = 011:671 = integer ratio of 1 to 61 1971/1/17: 17171 = palindrome 1971/1/17: 71117 = palindrome 1971/2/1: 020171 = 020:171 = each is palindrome 1971/2/17: 17271 = palindrome 1971/2/17: 71217 = palindrome 1971/2/19: 02191971 = 0219:1971 = integer ratio of 1 to 9 1971/2/19: 19710219 = 1971:0219 = integer ratio of 9 to 1 1971/3/1: 030171 = 030:171 = each is palindrome 1971/3/17: 17371 = palindrome 1971/3/17: 71317 = palindrome 1971/4/1: 040171 = 040:171 = each is palindrome 1971/4/17: 17471 = palindrome 1971/4/17: 71417 = palindrome 1971/5/1: 050171 = 050:171 = each is palindrome 1971/5/17: 17571 = palindrome 1971/5/17: 71517 = palindrome 1971/6/1: 060171 = 060:171 = each is palindrome 1971/6/16: 061671 = 061:671 = integer ratio of 1 to 11 1971/6/17: 17671 = palindrome 1971/6/17: 71617 = palindrome 1971/7/1: 070171 = 070:171 = each is palindrome 1971/7/1: 1771 = palindrome 1971/7/1: 7171 = cyclic permutation symmetric 1971/7/9: 971971 = cyclic permutation symmetric 1971/7/10: 071071 = cyclic permutation symmetric 1971/7/10: 710710 = cyclic permutation symmetric 1971/7/17: 17771 = palindrome 1971/7/17: 71717 = palindrome 1971/8/1: 080171 = 080:171 = each is palindrome 1971/8/17: 17871 = palindrome 1971/8/17: 71817 = palindrome 1971/9/1: 090171 = 090:171 = each is palindrome 1971/9/7: 197197 = cyclic permutation symmetric 1971/9/7: 971971 = cyclic permutation symmetric 1971/9/17: 1791971 = palindrome 1971/9/17: 17971 = palindrome 1971/9/17: 71917 = palindrome 1971/10/1: 711001 = 711:001 = integer ratio of 711 to 1 1971/10/3: 711003 = 711:003 = integer ratio of 237 to 1 1971/10/7: 071071 = cyclic permutation symmetric 1971/10/9: 711009 = 711:009 = integer ratio of 79 to 1 1971/10/11: 101171 = 101:171 = each is palindrome 1971/11/7: 71117 = palindrome 1971/11/10: 101171 = 101:171 = each is palindrome 1971/11/11: 111171 = 111:171 = each is palindrome 1971/11/12: 121171 = 121:171 = each is palindrome 1971/11/13: 131171 = 131:171 = each is palindrome 1971/11/14: 141171 = 141:171 = each is palindrome 1971/11/15: 151171 = 151:171 = each is palindrome 1971/11/16: 161171 = 161:171 = each is palindrome 1971/11/17: 171171 = palindrome 1971/11/17: 171171 = cyclic permutation symmetric 1971/11/17: 171171 = 171:171 = each is palindrome 1971/11/17: 711117 = palindrome 1971/11/18: 181171 = 181:171 = each is palindrome 1971/11/19: 191171 = 191:171 = each is palindrome 1971/12/11: 121171 = 121:171 = each is palindrome 1971/12/27: 271271 = cyclic permutation symmetric