I set this up from a flow by Steve-mcl. I haven't played with it for a while so there are bits I am hazy on now but it does a lot of what you are after.
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every 4 years, 2020 through 2040</td>\n </tr>\n <tr>\n <td class=\"t2-0pky\">0 0 7 * *</td>\n <td class=\"t2-0pky\">MON#1 * At 07:00 AM, on the first Monday of the month</td>\n </tr>\n <tr>\n <td class=\"t2-0pky\">0 0 12 * JAN,FEB,MAR,APR *</td>\n <td class=\"t2-0pky\">Every day at noon in January, February, March and April</td>\n </tr>\n <tr>\n <td class=\"t2-0pky\">* * 1W * *</td>\n <td class=\"t2-0pky\">Every minute, on the first weekday of the month</td>\n </tr>\n <tr>\n <td class=\"t2-0pky\">* * * * Tue#3</td>\n <td class=\"t2-0pky\">Every minute, on the third Tuesday of the month</td>\n </tr>\n <tr>\n <td class=\"t2-0pky\">0 12 * * MONL</td>\n <td class=\"t2-0pky\">At 12:00 PM, on the last Monday of the month</td>\n </tr>\n </table>`\n\n const alertDialog = function ($mdDialog) {\n let alert = $mdDialog.alert({\n title: 'Help',\n htmlContent: template,\n ok: 'Close'\n });\n \n $mdDialog.show( alert ).finally(function() { alert = undefined });\n }\n\n\n scope.showAlert = function(event) {\n const self = event.target\n const injector = angular.element(self).injector();\n injector.invoke(alertDialog, null, null);\n }\n\n })(scope);\n\n</script>\n\n\n</body>\n\n</html>\n\n<style id=\"#CSS_Tester_Input_Example_cards\">\n body {}\n\n #CSS_Tester_Input_Example_cards div {\n background-color: whitesmoke !important;\n height: 14rem;\n padding: 0.8em;\n /*border: solid;*/\n border-radius: 5px;\n }\n\n #CSS_Tester_Input_Example_cards h2 {\n font-family: Verdana;\n background-color: whitesmoke !important;\n }\n\n #CSS_Tester_Input_Example_cards p {\n font-family: Verdana;\n font-size: 0.9em;\n background-color: whitesmoke !important;\n\n }\n\n .nr-dashboard-theme .nr-dashboard-template {\n background-color: whitesmoke !important;\n }\n\n .newFont {\n font-family: Verdana;\n font-size: 0.9em;\n background-color: whitesmoke;\n\n }\n\n\n .nr-dashboard-theme ui-card-panel {\n background-color: whitesmoke;\n\n }\n\n\n .t2 {\n border-collapse: collapse;\n 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width: 48px;\n border-radius: 3px;\n font-size: 1.0em;\n\n }\n\n .btn-small{\n font-size: 0.8em;\n\n }\n\n .btn-standard:active,\n .btn-small:active {\n position: relative;\n transform: translate(-1px, -1px);\n\n }\n\n</style>","storeOutMessages":true,"fwdInMessages":true,"resendOnRefresh":true,"templateScope":"local","className":"","x":1190,"y":620,"wires":[[]],"info":"htmlContent"},{"id":"cba623f46f12e459","type":"ui_spacer","z":"e8fd4b5be134ae98","name":"spacer","group":"d6a1695f.c376f8","order":11,"width":3,"height":1},{"id":"d6a1695f.c376f8","type":"ui_group","name":"Default","tab":"c08b5841.22f118","order":1,"disp":false,"width":16,"collapse":false,"className":""},{"id":"c08b5841.22f118","type":"ui_tab","name":"CRON","icon":"dashboard","order":2,"disabled":false,"hidden":false}]
