1980/1/1: 010180 = up-down mirror symmetric
1980/1/1: 010180 = 01:01:80 = each is up-down mirror symmetric
1980/1/1: 010180 = 010:180 = integer ratio of 1 to 18
1980/1/1: 010180 = 010:180 = each is up-down mirror symmetric
1980/1/1: 01180 = up-down mirror symmetric
1980/1/1: 10180 = up-down mirror symmetric
1980/1/1: 1180 = up-down mirror symmetric
1980/1/1: 1180 = 11:80 = each is up-down mirror symmetric
1980/1/1: 198011 = 198:011 = integer ratio of 18 to 1
1980/1/1: 800101 = up-down mirror symmetric
1980/1/1: 800101 = 80:01:01 = each is up-down mirror symmetric
1980/1/1: 800101 = 800:101 = each is up-down mirror symmetric
1980/1/1: 80011 = up-down mirror symmetric
1980/1/1: 80101 = up-down mirror symmetric
1980/1/1: 8011 = up-down mirror symmetric
1980/1/1: 8011 = 80:11 = each is up-down mirror symmetric
1980/1/2: 010280 = 010:280 = integer ratio of 1 to 28
1980/1/2: 020180 = 020:180 = integer ratio of 1 to 9
1980/1/3: 010380 = 010:380 = integer ratio of 1 to 38
1980/1/3: 030180 = 030:180 = integer ratio of 1 to 6
1980/1/4: 010480 = 010:480 = integer ratio of 1 to 48
1980/1/5: 010580 = 010:580 = integer ratio of 1 to 58
1980/1/6: 010680 = 010:680 = integer ratio of 1 to 68
1980/1/6: 060180 = 060:180 = integer ratio of 1 to 3
1980/1/6: 1680 = 16:80 = integer ratio of 1 to 5
1980/1/6: 8016 = 80:16 = integer ratio of 5 to 1
1980/1/7: 010780 = 010:780 = integer ratio of 1 to 78
1980/1/8: 010880 = up-down mirror symmetric
1980/1/8: 010880 = 01:08:80 = each is up-down mirror symmetric
1980/1/8: 010880 = 010:880 = integer ratio of 1 to 88
1980/1/8: 010880 = 010:880 = each is up-down mirror symmetric
1980/1/8: 01880 = up-down mirror symmetric
1980/1/8: 080180 = up-down mirror symmetric
1980/1/8: 080180 = 08:01:80 = each is up-down mirror symmetric
1980/1/8: 080180 = 080:180 = each is up-down mirror symmetric
1980/1/8: 08180 = palindrome
1980/1/8: 08180 = left-right mirror symmetric
1980/1/8: 08180 = up-down mirror symmetric
1980/1/8: 10880 = up-down mirror symmetric
1980/1/8: 1880 = up-down mirror symmetric
1980/1/8: 1880 = 18:80 = each is up-down mirror symmetric
1980/1/8: 198018 = 198:018 = integer ratio of 11 to 1
1980/1/8: 800108 = up-down mirror symmetric
1980/1/8: 800108 = 80:01:08 = each is up-down mirror symmetric
1980/1/8: 800108 = 800:108 = each is up-down mirror symmetric
1980/1/8: 80018 = up-down mirror symmetric
1980/1/8: 80108 = palindrome
1980/1/8: 80108 = left-right mirror symmetric
1980/1/8: 80108 = up-down mirror symmetric
1980/1/8: 8018 = up-down mirror symmetric
1980/1/8: 8018 = 80:18 = each is up-down mirror symmetric
1980/1/8: 80180 = up-down mirror symmetric
1980/1/8: 8180 = up-down mirror symmetric
1980/1/8: 8180 = 81:80 = each is up-down mirror symmetric
1980/1/9: 010980 = 010:980 = integer ratio of 1 to 98
1980/1/9: 090180 = 090:180 = integer ratio of 1 to 2
1980/1/10: 01101980 = 0110:1980 = integer ratio of 1 to 18
1980/1/10: 011080 = up-down mirror symmetric
1980/1/10: 011080 = 01:10:80 = each is up-down mirror symmetric
1980/1/10: 011080 = 011:080 = each is up-down mirror symmetric
1980/1/10: 100180 = up-down mirror symmetric
1980/1/10: 100180 = 10:01:80 = each is up-down mirror symmetric
1980/1/10: 100180 = 100:180 = each is up-down mirror symmetric
1980/1/10: 10180 = up-down mirror symmetric
1980/1/10: 11080 = up-down mirror symmetric
1980/1/10: 19800110 = 1980:0110 = integer ratio of 18 to 1
1980/1/10: 800110 = up-down mirror symmetric
1980/1/10: 800110 = 80:01:10 = each is up-down mirror symmetric
1980/1/10: 800110 = 800:110 = each is up-down mirror symmetric
1980/1/10: 80110 = up-down mirror symmetric
1980/1/11: 011180 = up-down mirror symmetric
1980/1/11: 011180 = 01:11:80 = each is up-down mirror symmetric
1980/1/11: 011180 = 011:180 = each is up-down mirror symmetric
1980/1/11: 110180 = up-down mirror symmetric
1980/1/11: 110180 = 11:01:80 = each is up-down mirror symmetric
1980/1/11: 110180 = 110:180 = each is up-down mirror symmetric
1980/1/11: 11180 = up-down mirror symmetric
1980/1/11: 800111 = up-down mirror symmetric
1980/1/11: 800111 = 80:01:11 = each is up-down mirror symmetric
1980/1/11: 800111 = 800:111 = each is up-down mirror symmetric
1980/1/11: 80111 = up-down mirror symmetric
1980/1/18: 011880 = up-down mirror symmetric
1980/1/18: 011880 = 01:18:80 = each is up-down mirror symmetric
1980/1/18: 011880 = 011:880 = integer ratio of 1 to 80
1980/1/18: 011880 = 011:880 = each is up-down mirror symmetric
1980/1/18: 11880 = up-down mirror symmetric
1980/1/18: 180180 = up-down mirror symmetric
1980/1/18: 180180 = cyclic permutation symmetric
1980/1/18: 180180 = 18:01:80 = each is up-down mirror symmetric
1980/1/18: 180180 = 180:180 = each is up-down mirror symmetric
1980/1/18: 18180 = up-down mirror symmetric
1980/1/18: 800118 = up-down mirror symmetric
1980/1/18: 800118 = 80:01:18 = each is up-down mirror symmetric
1980/1/18: 800118 = 800:118 = each is up-down mirror symmetric
1980/1/18: 80118 = up-down mirror symmetric
1980/1/21: 012180 = 012:180 = integer ratio of 1 to 15
1980/1/24: 012480 = 012:480 = integer ratio of 1 to 40
1980/1/27: 012780 = 012:780 = integer ratio of 1 to 65
1980/2/1: 010280 = 010:280 = integer ratio of 1 to 28
1980/2/1: 020180 = 020:180 = integer ratio of 1 to 9
1980/2/2: 020280 = 020:280 = integer ratio of 1 to 14
1980/2/2: 198022 = 198:022 = integer ratio of 9 to 1
1980/2/3: 020380 = 020:380 = integer ratio of 1 to 19
1980/2/4: 020480 = 020:480 = integer ratio of 1 to 24
1980/2/4: 040280 = 040:280 = integer ratio of 1 to 7
1980/2/5: 020580 = 020:580 = integer ratio of 1 to 29
1980/2/6: 020680 = 020:680 = integer ratio of 1 to 34
1980/2/7: 020780 = 020:780 = integer ratio of 1 to 39
1980/2/7: 070280 = 070:280 = integer ratio of 1 to 4
1980/2/8: 020880 = 020:880 = integer ratio of 1 to 44
1980/2/8: 08280 = palindrome
1980/2/8: 80208 = palindrome
1980/2/9: 020980 = 020:980 = integer ratio of 1 to 49
1980/2/14: 140280 = 140:280 = integer ratio of 1 to 2
1980/2/20: 02201980 = 0220:1980 = integer ratio of 1 to 9
1980/2/20: 19800220 = 1980:0220 = integer ratio of 9 to 1
1980/2/28: 022880 = 022:880 = integer ratio of 1 to 40
1980/2/28: 280280 = cyclic permutation symmetric
1980/3/1: 010380 = 010:380 = integer ratio of 1 to 38
1980/3/1: 030180 = 030:180 = integer ratio of 1 to 6
1980/3/2: 020380 = 020:380 = integer ratio of 1 to 19
1980/3/3: 198033 = 198:033 = integer ratio of 6 to 1
1980/3/4: 030480 = 030:480 = integer ratio of 1 to 16
1980/3/7: 030780 = 030:780 = integer ratio of 1 to 26
1980/3/8: 08380 = palindrome
1980/3/8: 80308 = palindrome
1980/3/19: 190380 = 190:380 = integer ratio of 1 to 2
1980/3/24: 032480 = 032:480 = integer ratio of 1 to 15
1980/3/30: 03301980 = 0330:1980 = integer ratio of 1 to 6
1980/3/30: 19800330 = 1980:0330 = integer ratio of 6 to 1
1980/4/1: 010480 = 010:480 = integer ratio of 1 to 48
1980/4/2: 020480 = 020:480 = integer ratio of 1 to 24
1980/4/2: 040280 = 040:280 = integer ratio of 1 to 7
1980/4/3: 030480 = 030:480 = integer ratio of 1 to 16
1980/4/4: 040480 = 040:480 = integer ratio of 1 to 12
1980/4/6: 040680 = 040:680 = integer ratio of 1 to 17
1980/4/6: 060480 = 060:480 = integer ratio of 1 to 8
1980/4/8: 040880 = 040:880 = integer ratio of 1 to 22
1980/4/8: 080480 = 080:480 = integer ratio of 1 to 6
1980/4/8: 08480 = palindrome
1980/4/8: 80408 = palindrome
1980/4/12: 120480 = 120:480 = integer ratio of 1 to 4
1980/4/16: 160480 = 160:480 = integer ratio of 1 to 3
1980/4/24: 240480 = 240:480 = integer ratio of 1 to 2
1980/5/1: 010580 = 010:580 = integer ratio of 1 to 58
1980/5/2: 020580 = 020:580 = integer ratio of 1 to 29
1980/5/8: 08580 = palindrome
1980/5/8: 80508 = palindrome
1980/5/20: 052080 = 05:20:80 = geometric series of ratio 4
1980/5/27: 052780 = 052:780 = integer ratio of 1 to 15
1980/5/29: 290580 = 290:580 = integer ratio of 1 to 2
1980/6/1: 010680 = 010:680 = integer ratio of 1 to 68
1980/6/1: 060180 = 060:180 = integer ratio of 1 to 3
1980/6/1: 1680 = 16:80 = integer ratio of 1 to 5
1980/6/2: 020680 = 020:680 = integer ratio of 1 to 34
1980/6/4: 040680 = 040:680 = integer ratio of 1 to 17
1980/6/4: 060480 = 060:480 = integer ratio of 1 to 8
1980/6/6: 198066 = 198:066 = integer ratio of 3 to 1
1980/6/7: 060780 = 060:780 = integer ratio of 1 to 13
1980/6/8: 08680 = palindrome
1980/6/8: 80608 = palindrome
1980/6/17: 170680 = 170:680 = integer ratio of 1 to 4
1980/7/1: 010780 = 010:780 = integer ratio of 1 to 78
1980/7/2: 020780 = 020:780 = integer ratio of 1 to 39
1980/7/2: 070280 = 070:280 = integer ratio of 1 to 4
1980/7/3: 030780 = 030:780 = integer ratio of 1 to 26
1980/7/6: 060780 = 060:780 = integer ratio of 1 to 13
1980/7/8: 08780 = palindrome
1980/7/8: 80708 = palindrome
1980/7/9: 070980 = 070:980 = integer ratio of 1 to 14
1980/7/13: 130780 = 130:780 = integer ratio of 1 to 6
1980/7/26: 260780 = 260:780 = integer ratio of 1 to 3
1980/8/1: 010880 = up-down mirror symmetric
1980/8/1: 010880 = 01:08:80 = each is up-down mirror symmetric
1980/8/1: 010880 = 010:880 = integer ratio of 1 to 88
1980/8/1: 010880 = 010:880 = each is up-down mirror symmetric
1980/8/1: 01880 = up-down mirror symmetric
1980/8/1: 080180 = up-down mirror symmetric
1980/8/1: 080180 = 08:01:80 = each is up-down mirror symmetric
1980/8/1: 080180 = 080:180 = each is up-down mirror symmetric
1980/8/1: 08180 = palindrome
1980/8/1: 08180 = left-right mirror symmetric
1980/8/1: 08180 = up-down mirror symmetric
1980/8/1: 10880 = up-down mirror symmetric
1980/8/1: 1880 = up-down mirror symmetric
1980/8/1: 1880 = 18:80 = each is up-down mirror symmetric
1980/8/1: 800801 = up-down mirror symmetric
1980/8/1: 800801 = 80:08:01 = each is up-down mirror symmetric
1980/8/1: 800801 = 800:801 = each is up-down mirror symmetric
1980/8/1: 80081 = up-down mirror symmetric
1980/8/1: 80180 = up-down mirror symmetric
1980/8/1: 80801 = up-down mirror symmetric
1980/8/1: 8081 = up-down mirror symmetric
1980/8/1: 8081 = 80:81 = each is up-down mirror symmetric
1980/8/1: 8180 = up-down mirror symmetric
1980/8/1: 8180 = 81:80 = each is up-down mirror symmetric
1980/8/2: 020880 = 020:880 = integer ratio of 1 to 44
1980/8/2: 08280 = palindrome
1980/8/3: 08380 = palindrome
1980/8/4: 040880 = 040:880 = integer ratio of 1 to 22
1980/8/4: 080480 = 080:480 = integer ratio of 1 to 6
1980/8/4: 08480 = palindrome
1980/8/5: 08580 = palindrome
1980/8/6: 08680 = palindrome
1980/8/7: 08780 = palindrome
1980/8/8: 080880 = up-down mirror symmetric
1980/8/8: 080880 = 08:08:80 = each is up-down mirror symmetric
1980/8/8: 080880 = 080:880 = integer ratio of 1 to 11
1980/8/8: 080880 = 080:880 = each is up-down mirror symmetric
1980/8/8: 08880 = palindrome
1980/8/8: 08880 = left-right mirror symmetric
1980/8/8: 08880 = up-down mirror symmetric
1980/8/8: 800808 = up-down mirror symmetric
1980/8/8: 800808 = 80:08:08 = each is up-down mirror symmetric
1980/8/8: 800808 = 800:808 = each is up-down mirror symmetric
1980/8/8: 80088 = up-down mirror symmetric
1980/8/8: 80808 = palindrome
1980/8/8: 80808 = left-right mirror symmetric
1980/8/8: 80808 = up-down mirror symmetric
1980/8/8: 8088 = up-down mirror symmetric
1980/8/8: 8088 = 80:88 = each is up-down mirror symmetric
1980/8/8: 80880 = up-down mirror symmetric
1980/8/8: 8880 = up-down mirror symmetric
1980/8/8: 8880 = 88:80 = each is up-down mirror symmetric
1980/8/9: 0891980 = palindrome
1980/8/9: 08980 = palindrome
1980/8/10: 081080 = up-down mirror symmetric
1980/8/10: 081080 = 08:10:80 = each is up-down mirror symmetric
1980/8/10: 081080 = 081:080 = each is up-down mirror symmetric
1980/8/10: 100880 = up-down mirror symmetric
1980/8/10: 100880 = 10:08:80 = each is up-down mirror symmetric
1980/8/10: 100880 = 100:880 = each is up-down mirror symmetric
1980/8/10: 10880 = up-down mirror symmetric
1980/8/10: 800810 = up-down mirror symmetric
1980/8/10: 800810 = 80:08:10 = each is up-down mirror symmetric
1980/8/10: 800810 = 800:810 = each is up-down mirror symmetric
1980/8/10: 80810 = up-down mirror symmetric
1980/8/10: 81080 = up-down mirror symmetric
1980/8/11: 081180 = palindrome
1980/8/11: 081180 = left-right mirror symmetric
1980/8/11: 081180 = up-down mirror symmetric
1980/8/11: 081180 = 08:11:80 = each is up-down mirror symmetric
1980/8/11: 081180 = 081:180 = each is up-down mirror symmetric
1980/8/11: 110880 = up-down mirror symmetric
1980/8/11: 110880 = 11:08:80 = each is up-down mirror symmetric
1980/8/11: 110880 = 110:880 = integer ratio of 1 to 8
1980/8/11: 110880 = 110:880 = each is up-down mirror symmetric
1980/8/11: 11880 = up-down mirror symmetric
1980/8/11: 800811 = up-down mirror symmetric
1980/8/11: 800811 = 80:08:11 = each is up-down mirror symmetric
1980/8/11: 800811 = 800:811 = each is up-down mirror symmetric
1980/8/11: 80811 = up-down mirror symmetric
1980/8/11: 81180 = up-down mirror symmetric
1980/8/18: 081880 = up-down mirror symmetric
1980/8/18: 081880 = 08:18:80 = each is up-down mirror symmetric
1980/8/18: 081880 = 081:880 = each is up-down mirror symmetric
1980/8/18: 180880 = up-down mirror symmetric
1980/8/18: 180880 = 18:08:80 = each is up-down mirror symmetric
1980/8/18: 180880 = 180:880 = each is up-down mirror symmetric
1980/8/18: 18880 = up-down mirror symmetric
1980/8/18: 800818 = up-down mirror symmetric
1980/8/18: 800818 = 80:08:18 = each is up-down mirror symmetric
1980/8/18: 800818 = 800:818 = each is up-down mirror symmetric
1980/8/18: 80818 = up-down mirror symmetric
1980/8/18: 81880 = up-down mirror symmetric
1980/8/22: 082280 = palindrome
1980/8/22: 220880 = 220:880 = integer ratio of 1 to 4
1980/9/1: 010980 = 010:980 = integer ratio of 1 to 98
1980/9/1: 090180 = 090:180 = integer ratio of 1 to 2
1980/9/2: 020980 = 020:980 = integer ratio of 1 to 49
1980/9/7: 070980 = 070:980 = integer ratio of 1 to 14
1980/9/8: 0891980 = palindrome
1980/9/8: 08980 = palindrome
1980/9/8: 80908 = palindrome
1980/9/9: 198099 = 198:099 = integer ratio of 2 to 1
1980/9/14: 140980 = 140:980 = integer ratio of 1 to 7
1980/10/1: 01101980 = 0110:1980 = integer ratio of 1 to 18
1980/10/1: 011080 = up-down mirror symmetric
1980/10/1: 011080 = 01:10:80 = each is up-down mirror symmetric
1980/10/1: 011080 = 011:080 = each is up-down mirror symmetric
1980/10/1: 100180 = up-down mirror symmetric
1980/10/1: 100180 = 10:01:80 = each is up-down mirror symmetric
1980/10/1: 100180 = 100:180 = each is up-down mirror symmetric
1980/10/1: 10180 = up-down mirror symmetric
1980/10/1: 11080 = up-down mirror symmetric
1980/10/1: 801001 = up-down mirror symmetric
1980/10/1: 801001 = 80:10:01 = each is up-down mirror symmetric
1980/10/1: 801001 = 801:001 = integer ratio of 801 to 1
1980/10/1: 801001 = 801:001 = each is up-down mirror symmetric
1980/10/1: 80101 = up-down mirror symmetric
1980/10/3: 801003 = 801:003 = integer ratio of 267 to 1
1980/10/8: 081080 = up-down mirror symmetric
1980/10/8: 081080 = 08:10:80 = each is up-down mirror symmetric
1980/10/8: 081080 = 081:080 = each is up-down mirror symmetric
1980/10/8: 100880 = up-down mirror symmetric
1980/10/8: 100880 = 10:08:80 = each is up-down mirror symmetric
1980/10/8: 100880 = 100:880 = each is up-down mirror symmetric
1980/10/8: 10880 = up-down mirror symmetric
1980/10/8: 801008 = up-down mirror symmetric
1980/10/8: 801008 = 80:10:08 = each is up-down mirror symmetric
1980/10/8: 801008 = 801:008 = each is up-down mirror symmetric
1980/10/8: 80108 = palindrome
1980/10/8: 80108 = left-right mirror symmetric
1980/10/8: 80108 = up-down mirror symmetric
1980/10/8: 81080 = up-down mirror symmetric
1980/10/9: 801009 = 801:009 = integer ratio of 89 to 1
1980/10/10: 101080 = up-down mirror symmetric
1980/10/10: 101080 = 10:10:80 = each is up-down mirror symmetric
1980/10/10: 101080 = 101:080 = each is left-right mirror symmetric
1980/10/10: 101080 = 101:080 = each is palindrome
1980/10/10: 101080 = 101:080 = each is up-down mirror symmetric
1980/10/10: 801010 = up-down mirror symmetric
1980/10/10: 801010 = 80:10:10 = each is up-down mirror symmetric
1980/10/10: 801010 = 801:010 = each is up-down mirror symmetric
1980/10/11: 101180 = up-down mirror symmetric
1980/10/11: 101180 = 10:11:80 = each is up-down mirror symmetric
1980/10/11: 101180 = 101:180 = each is up-down mirror symmetric
1980/10/11: 111080 = up-down mirror symmetric
1980/10/11: 111080 = 11:10:80 = each is up-down mirror symmetric
1980/10/11: 111080 = 111:080 = each is left-right mirror symmetric
1980/10/11: 111080 = 111:080 = each is palindrome
1980/10/11: 111080 = 111:080 = each is up-down mirror symmetric
1980/10/11: 801011 = up-down mirror symmetric
1980/10/11: 801011 = 80:10:11 = each is up-down mirror symmetric
1980/10/11: 801011 = 801:011 = each is up-down mirror symmetric
1980/10/12: 121080 = 121:080 = each is palindrome
1980/10/13: 131080 = 131:080 = each is palindrome
1980/10/14: 141080 = 141:080 = each is palindrome
1980/10/15: 151080 = 151:080 = each is palindrome
1980/10/16: 161080 = 161:080 = each is palindrome
1980/10/17: 171080 = 171:080 = each is palindrome
1980/10/18: 101880 = up-down mirror symmetric
1980/10/18: 101880 = 10:18:80 = each is up-down mirror symmetric
1980/10/18: 101880 = 101:880 = each is up-down mirror symmetric
1980/10/18: 181080 = up-down mirror symmetric
1980/10/18: 181080 = 18:10:80 = each is up-down mirror symmetric
1980/10/18: 181080 = 181:080 = each is left-right mirror symmetric
1980/10/18: 181080 = 181:080 = each is palindrome
1980/10/18: 181080 = 181:080 = each is up-down mirror symmetric
1980/10/18: 801018 = up-down mirror symmetric
1980/10/18: 801018 = 80:10:18 = each is up-down mirror symmetric
1980/10/18: 801018 = 801:018 = each is up-down mirror symmetric
1980/10/19: 191080 = 191:080 = each is palindrome
1980/11/1: 011180 = up-down mirror symmetric
1980/11/1: 011180 = 01:11:80 = each is up-down mirror symmetric
1980/11/1: 011180 = 011:180 = each is up-down mirror symmetric
1980/11/1: 110180 = up-down mirror symmetric
1980/11/1: 110180 = 11:01:80 = each is up-down mirror symmetric
1980/11/1: 110180 = 110:180 = each is up-down mirror symmetric
1980/11/1: 11180 = up-down mirror symmetric
1980/11/1: 801101 = up-down mirror symmetric
1980/11/1: 801101 = 80:11:01 = each is up-down mirror symmetric
1980/11/1: 801101 = 801:101 = each is up-down mirror symmetric
1980/11/1: 80111 = up-down mirror symmetric
1980/11/8: 081180 = palindrome
1980/11/8: 081180 = left-right mirror symmetric
1980/11/8: 081180 = up-down mirror symmetric
1980/11/8: 081180 = 08:11:80 = each is up-down mirror symmetric
1980/11/8: 081180 = 081:180 = each is up-down mirror symmetric
1980/11/8: 110880 = up-down mirror symmetric
1980/11/8: 110880 = 11:08:80 = each is up-down mirror symmetric
1980/11/8: 110880 = 110:880 = integer ratio of 1 to 8
1980/11/8: 110880 = 110:880 = each is up-down mirror symmetric
1980/11/8: 11880 = up-down mirror symmetric
1980/11/8: 801108 = palindrome
1980/11/8: 801108 = left-right mirror symmetric
1980/11/8: 801108 = up-down mirror symmetric
1980/11/8: 801108 = 80:11:08 = each is up-down mirror symmetric
1980/11/8: 801108 = 801:108 = each is up-down mirror symmetric
1980/11/8: 80118 = up-down mirror symmetric
1980/11/8: 81180 = up-down mirror symmetric
1980/11/10: 101180 = up-down mirror symmetric
1980/11/10: 101180 = 10:11:80 = each is up-down mirror symmetric
1980/11/10: 101180 = 101:180 = each is up-down mirror symmetric
1980/11/10: 111080 = up-down mirror symmetric
1980/11/10: 111080 = 11:10:80 = each is up-down mirror symmetric
1980/11/10: 111080 = 111:080 = each is left-right mirror symmetric
1980/11/10: 111080 = 111:080 = each is palindrome
1980/11/10: 111080 = 111:080 = each is up-down mirror symmetric
1980/11/10: 801110 = up-down mirror symmetric
1980/11/10: 801110 = 80:11:10 = each is up-down mirror symmetric
1980/11/10: 801110 = 801:110 = each is up-down mirror symmetric
1980/11/11: 111180 = up-down mirror symmetric
1980/11/11: 111180 = 11:11:80 = each is up-down mirror symmetric
1980/11/11: 111180 = 111:180 = each is up-down mirror symmetric
1980/11/11: 801111 = up-down mirror symmetric
1980/11/11: 801111 = 80:11:11 = each is up-down mirror symmetric
1980/11/11: 801111 = 801:111 = each is up-down mirror symmetric
1980/11/18: 111880 = up-down mirror symmetric
1980/11/18: 111880 = 11:18:80 = each is up-down mirror symmetric
1980/11/18: 111880 = 111:880 = each is up-down mirror symmetric
1980/11/18: 181180 = up-down mirror symmetric
1980/11/18: 181180 = 18:11:80 = each is up-down mirror symmetric
1980/11/18: 181180 = 181:180 = each is up-down mirror symmetric
1980/11/18: 801118 = up-down mirror symmetric
1980/11/18: 801118 = 80:11:18 = each is up-down mirror symmetric
1980/11/18: 801118 = 801:118 = each is up-down mirror symmetric
1980/12/4: 120480 = 120:480 = integer ratio of 1 to 4
1980/12/10: 121080 = 121:080 = each is palindrome