1987/1/4: 141987 = 141:987 = integer ratio of 1 to 7
1987/1/7: 010787 = 010:787 = each is palindrome
1987/1/11: 011187 = 011:187 = integer ratio of 1 to 17
1987/2/7: 020787 = 020:787 = each is palindrome
1987/2/9: 2987 = 29:87 = integer ratio of 1 to 3
1987/2/9: 8729 = 87:29 = integer ratio of 3 to 1
1987/2/19: 021987 = 021:987 = integer ratio of 1 to 47
1987/3/7: 030787 = 030:787 = each is palindrome
1987/4/1: 141987 = 141:987 = integer ratio of 1 to 7
1987/4/7: 040787 = 040:787 = each is palindrome
1987/4/12: 041287 = 041:287 = integer ratio of 1 to 7
1987/5/7: 050787 = 050:787 = each is palindrome
1987/6/5: 8765 = 8:7:6:5 = arthimetic series of increment -1
1987/6/7: 060787 = 060:787 = each is palindrome
1987/7/1: 010787 = 010:787 = each is palindrome
1987/7/2: 020787 = 020:787 = each is palindrome
1987/7/3: 030787 = 030:787 = each is palindrome
1987/7/4: 040787 = 040:787 = each is palindrome
1987/7/5: 050787 = 050:787 = each is palindrome
1987/7/6: 060787 = 060:787 = each is palindrome
1987/7/7: 070787 = 070:787 = each is palindrome
1987/7/8: 080787 = 080:787 = each is palindrome
1987/7/8: 7887 = palindrome
1987/7/8: 87078 = palindrome
1987/7/8: 8778 = palindrome
1987/7/8: 8787 = cyclic permutation symmetric
1987/7/9: 090787 = 090:787 = each is palindrome
1987/8/7: 080787 = 080:787 = each is palindrome
1987/8/7: 7887 = palindrome
1987/8/7: 8787 = cyclic permutation symmetric
1987/9/2: 198792 = 198:792 = integer ratio of 1 to 4
1987/9/2: 2987 = 29:87 = integer ratio of 1 to 3
1987/9/7: 090787 = 090:787 = each is palindrome
1987/10/1: 871001 = 871:001 = integer ratio of 871 to 1
1987/10/13: 871013 = 871:013 = integer ratio of 67 to 1
1987/10/17: 101787 = 101:787 = each is palindrome
1987/10/26: 261087 = 261:087 = integer ratio of 3 to 1
1987/11/1: 011187 = 011:187 = integer ratio of 1 to 17
1987/11/17: 111787 = 111:787 = each is palindrome
1987/12/4: 041287 = 041:287 = integer ratio of 1 to 7
1987/12/17: 121787 = 121:787 = each is palindrome