I am trying to update a date field on the Account object when two roll up summaries (Total_Opportunities_Won__c & Active_Opportunities__c) enter 0. Currently our process is that we have two roll up summaries that feed from the Opportunity object and then we have 3 scheduled apex classes to update the status. What I am needing to accomplish is a way to update a date field on the Account object when both the roll up summaries equal 0. Then if the roll up summary for Active_Opportunities__c increases to 1 or greater to put todays date. Was wondering if someone might be able to help the newbie with this? 

global class DailyAccountProcessorProspect implements Schedulable {

    global void execute(SchedulableContext ctx) {
        List<Account> myList = [SELECT Active_Opportunities__c,Id,Total_Opportunities_Won__c FROM Account WHERE Total_Opportunities_Won__c = 0 AND Active_Opportunities__c = 0];
        
        if(!myList.isEmpty()) {
            for(Account l: myList) {
                l.Customer_Type__c = 'Prospect';
            }
            update myList;
        }
    }
}

global class DailyAccountProcessorFormer implements Schedulable {

    global void execute(SchedulableContext ctx) {
        List<Account> myList = [SELECT Active_Opportunities__c,Id,Total_Opportunities_Won__c FROM Account WHERE Total_Opportunities_Won__c >= 1 AND Active_Opportunities__c = 0];
        
        if(!myList.isEmpty()) {
            for(Account l: myList) {
                l.Customer_Type__c = 'Former Customer';
            }
            update myList;
        }
    }
}

global class DailyAccountProcessorCurrent implements Schedulable {

    global void execute(SchedulableContext ctx) {
        List<Account> myList = [SELECT Active_Opportunities__c,Id,Total_Opportunities_Won__c FROM Account WHERE Total_Opportunities_Won__c >= 1 AND Active_Opportunities__c = 1];
        
        if(!myList.isEmpty()) {
            for(Account l: myList) {
                l.Customer_Type__c = 'Current Client';
            }
            update myList;
        }
    }
}