1917/1/2: 211917 = 21:19:17 = arthimetic series of increment -2
1917/1/3: 131917 = 131:917 = integer ratio of 1 to 7
1917/1/5: 191715 = 19:17:15 = arthimetic series of increment -2
1917/1/5: 5117 = 51:17 = integer ratio of 3 to 1
1917/1/7: 010717 = 010:717 = each is palindrome
1917/1/7: 1717 = cyclic permutation symmetric
1917/1/7: 191717 = 191:717 = each is palindrome
1917/1/7: 7117 = palindrome
1917/1/9: 010917 = 01:09:17 = arthimetic series of increment 8
1917/1/15: 011517 = 011:517 = integer ratio of 1 to 47
1917/1/31: 013117 = 013:117 = integer ratio of 1 to 9
1917/2/1: 211917 = 21:19:17 = arthimetic series of increment -2
1917/2/7: 020717 = 020:717 = each is palindrome
1917/2/7: 191727 = 191:727 = each is palindrome
1917/2/13: 02131917 = 0213:1917 = integer ratio of 1 to 9
1917/2/13: 19170213 = 1917:0213 = integer ratio of 9 to 1
1917/3/1: 131917 = 131:917 = integer ratio of 1 to 7
1917/3/4: 1734 = 17:34 = integer ratio of 1 to 2
1917/3/4: 3417 = 34:17 = integer ratio of 2 to 1
1917/3/7: 030717 = 030:717 = each is palindrome
1917/3/7: 191737 = 191:737 = each is palindrome
1917/3/10: 031017 = 03:10:17 = arthimetic series of increment 7
1917/3/12: 031217 = 031:217 = integer ratio of 1 to 7
1917/4/3: 3417 = 34:17 = integer ratio of 2 to 1
1917/4/7: 040717 = 040:717 = each is palindrome
1917/4/7: 191747 = 191:747 = each is palindrome
1917/5/1: 1751 = 17:51 = integer ratio of 1 to 3
1917/5/1: 5117 = 51:17 = integer ratio of 3 to 1
1917/5/7: 050717 = 050:717 = each is palindrome
1917/5/7: 191757 = 191:757 = each is palindrome
1917/5/8: 8517 = 85:17 = integer ratio of 5 to 1
1917/5/10: 051017 = 051:017 = integer ratio of 3 to 1
1917/5/10: 170510 = 170:510 = integer ratio of 1 to 3
1917/5/11: 051117 = 05:11:17 = arthimetic series of increment 6
1917/6/4: 191764 = 191:764 = integer ratio of 1 to 4
1917/6/7: 060717 = 060:717 = each is palindrome
1917/6/7: 191767 = 191:767 = each is palindrome
1917/6/8: 1768 = 17:68 = integer ratio of 1 to 4
1917/6/8: 6817 = 68:17 = integer ratio of 4 to 1
1917/7/1: 010717 = 010:717 = each is palindrome
1917/7/1: 17071 = palindrome
1917/7/1: 1717 = cyclic permutation symmetric
1917/7/1: 1771 = palindrome
1917/7/1: 7117 = palindrome
1917/7/2: 020717 = 020:717 = each is palindrome
1917/7/3: 030717 = 030:717 = each is palindrome
1917/7/4: 040717 = 040:717 = each is palindrome
1917/7/5: 050717 = 050:717 = each is palindrome
1917/7/6: 060717 = 060:717 = each is palindrome
1917/7/7: 070717 = 070:717 = each is palindrome
1917/7/7: 191777 = 191:777 = each is palindrome
1917/7/8: 080717 = 080:717 = each is palindrome
1917/7/9: 090717 = 090:717 = each is palindrome
1917/7/10: 71017 = palindrome
1917/7/11: 71117 = palindrome
1917/7/12: 071217 = 07:12:17 = arthimetic series of increment 5
1917/7/12: 71217 = palindrome
1917/7/13: 71317 = palindrome
1917/7/14: 71417 = palindrome
1917/7/15: 71517 = palindrome
1917/7/16: 71617 = palindrome
1917/7/17: 71717 = palindrome
1917/7/18: 71817 = palindrome
1917/7/19: 71917 = palindrome
1917/7/19: 7191917 = palindrome
1917/8/5: 1785 = 17:85 = integer ratio of 1 to 5
1917/8/5: 8517 = 85:17 = integer ratio of 5 to 1
1917/8/6: 6817 = 68:17 = integer ratio of 4 to 1
1917/8/7: 080717 = 080:717 = each is palindrome
1917/8/7: 191787 = 191:787 = each is palindrome
1917/9/1: 010917 = 01:09:17 = arthimetic series of increment 8
1917/9/1: 170901 = 17:09:01 = arthimetic series of increment -8
1917/9/7: 090717 = 090:717 = each is palindrome
1917/9/7: 191797 = 191:797 = each is palindrome
1917/9/13: 091317 = 09:13:17 = arthimetic series of increment 4
1917/10/1: 171001 = 171:001 = integer ratio of 171 to 1
1917/10/3: 031017 = 03:10:17 = arthimetic series of increment 7
1917/10/3: 171003 = 17:10:03 = arthimetic series of increment -7
1917/10/3: 171003 = 171:003 = integer ratio of 57 to 1
1917/10/5: 051017 = 051:017 = integer ratio of 3 to 1
1917/10/7: 71017 = palindrome
1917/10/9: 171009 = 171:009 = integer ratio of 19 to 1
1917/10/10: 171010 = 171:010 = each is palindrome
1917/10/17: 101717 = 101:717 = each is palindrome
1917/10/19: 171019 = 171:019 = integer ratio of 9 to 1
1917/10/20: 102017 = 102:017 = integer ratio of 6 to 1
1917/10/20: 171020 = 171:020 = each is palindrome
1917/10/22: 221017 = 221:017 = integer ratio of 13 to 1
1917/10/30: 171030 = 171:030 = each is palindrome
1917/11/1: 171101 = 171:101 = each is palindrome
1917/11/5: 051117 = 05:11:17 = arthimetic series of increment 6
1917/11/5: 171105 = 17:11:05 = arthimetic series of increment -6
1917/11/7: 71117 = palindrome
1917/11/11: 171111 = 171:111 = each is palindrome
1917/11/14: 111417 = 11:14:17 = arthimetic series of increment 3
1917/11/17: 111717 = 111:717 = each is palindrome
1917/11/21: 171121 = 171:121 = each is palindrome
1917/12/2: 171202 = 171:202 = each is palindrome
1917/12/3: 031217 = 031:217 = integer ratio of 1 to 7
1917/12/7: 071217 = 07:12:17 = arthimetic series of increment 5
1917/12/7: 171207 = 17:12:07 = arthimetic series of increment -5
1917/12/7: 71217 = palindrome
1917/12/12: 171212 = 171:212 = each is palindrome
1917/12/17: 121717 = 121:717 = each is palindrome
1917/12/22: 171222 = 171:222 = each is palindrome