1939/1/1: 111939 = 111:939 = each is palindrome
1939/1/2: 121939 = 121:939 = each is palindrome
1939/1/3: 131939 = 131:939 = each is palindrome
1939/1/3: 1339 = 13:39 = integer ratio of 1 to 3
1939/1/3: 3913 = 39:13 = integer ratio of 3 to 1
1939/1/4: 141939 = 141:939 = each is palindrome
1939/1/5: 151939 = 151:939 = each is palindrome
1939/1/6: 161939 = 161:939 = each is palindrome
1939/1/7: 171939 = 171:939 = each is palindrome
1939/1/8: 181939 = 181:939 = each is palindrome
1939/1/9: 010939 = 010:939 = each is palindrome
1939/1/9: 191939 = 191:939 = each is palindrome
1939/1/15: 011539 = 011:539 = integer ratio of 1 to 49
1939/1/20: 012039 = 01:20:39 = arthimetic series of increment 19
1939/1/30: 013039 = 013:039 = integer ratio of 1 to 3
1939/1/30: 390130 = 390:130 = integer ratio of 3 to 1
1939/2/1: 121939 = 121:939 = each is palindrome
1939/2/9: 020939 = 020:939 = each is palindrome
1939/3/1: 131939 = 131:939 = each is palindrome
1939/3/1: 1339 = 13:39 = integer ratio of 1 to 3
1939/3/9: 030939 = 030:939 = each is palindrome
1939/3/9: 3939 = cyclic permutation symmetric
1939/3/9: 9339 = palindrome
1939/3/21: 032139 = 03:21:39 = arthimetic series of increment 18
1939/4/1: 141939 = 141:939 = each is palindrome
1939/4/9: 040939 = 040:939 = each is palindrome
1939/5/1: 151939 = 151:939 = each is palindrome
1939/5/9: 050939 = 050:939 = each is palindrome
1939/5/9: 193959 = 19:39:59 = arthimetic series of increment 20
1939/5/22: 052239 = 05:22:39 = arthimetic series of increment 17
1939/6/1: 161939 = 161:939 = each is palindrome
1939/6/5: 193965 = 193:965 = integer ratio of 1 to 5
1939/6/9: 060939 = 060:939 = each is palindrome
1939/7/1: 171939 = 171:939 = each is palindrome
1939/7/8: 3978 = 39:78 = integer ratio of 1 to 2
1939/7/8: 7839 = 78:39 = integer ratio of 2 to 1
1939/7/9: 070939 = 070:939 = each is palindrome
1939/7/16: 071639 = 071:639 = integer ratio of 1 to 9
1939/7/23: 072339 = 07:23:39 = arthimetic series of increment 16
1939/8/1: 181939 = 181:939 = each is palindrome
1939/8/7: 7839 = 78:39 = integer ratio of 2 to 1
1939/8/9: 080939 = 080:939 = each is palindrome
1939/9/1: 010939 = 010:939 = each is palindrome
1939/9/1: 191939 = 191:939 = each is palindrome
1939/9/2: 020939 = 020:939 = each is palindrome
1939/9/3: 030939 = 030:939 = each is palindrome
1939/9/3: 39093 = palindrome
1939/9/3: 3939 = cyclic permutation symmetric
1939/9/3: 3993 = palindrome
1939/9/3: 9339 = palindrome
1939/9/4: 040939 = 040:939 = each is palindrome
1939/9/5: 050939 = 050:939 = each is palindrome
1939/9/6: 060939 = 060:939 = each is palindrome
1939/9/7: 070939 = 070:939 = each is palindrome
1939/9/8: 080939 = 080:939 = each is palindrome
1939/9/9: 090939 = 090:939 = each is palindrome
1939/9/24: 092439 = 09:24:39 = arthimetic series of increment 15
1939/9/30: 93039 = palindrome
1939/10/1: 391001 = 391:001 = integer ratio of 391 to 1
1939/10/17: 391017 = 391:017 = integer ratio of 23 to 1
1939/10/19: 101939 = 101:939 = each is palindrome
1939/10/23: 391023 = 391:023 = integer ratio of 17 to 1
1939/11/19: 111939 = 111:939 = each is palindrome
1939/11/25: 112539 = 11:25:39 = arthimetic series of increment 14
1939/12/19: 121939 = 121:939 = each is palindrome