GTM DNS Time based iRule assistance needed

Hi, maybe you could do something like this:

GTM rule for wide ip:

when DNS_REQUEST {
    set now [clock format [clock seconds] -format "%H:%M"]
     Maintenance on DC 1
    if { $now >= "01:00" and $now < "02:00" } {
        VS DC 2
        host 10.10.10.10 

     Maintenance on DC 2
    } elseif { $now >= "02:00" and $now < "03:00" } {
        VS DC 1
        host 20.20.20.20 
    }
    Otherwise, resolve from pool
}

DC 1 VS:

when HTTP_REQUEST {
    set now [clock format [clock seconds] -format "%H:%M"]
    if { $now >= "01:00" and $now < "02:00" } {
        HTTP::respond 200 content {MaintenanceSorry!} noserver
    }
}

DC 2 VS:

when HTTP_REQUEST {
    set now [clock format [clock seconds] -format "%H:%M"]
    if { $now >= "02:00" and $now < "03:00" } {
        HTTP::respond 200 content {MaintenanceSorry!} noserver
    }
}

Regards.