Have I had lunch yet?
Swift 3, 310 bytes

import Foundation;var n=String(describing:Date());var k=n.startIndex;print(Int(n[n.index(k,offsetBy:5)...n.index(k,offsetBy:6)])!*60+Int(n[n.index(k,offsetBy:8)...n.index(k,offsetBy:9)])!+720&lt;=Int(n[n.index(k,offsetBy:11)...n.index(k,offsetBy:12)])!*60+Int(n[n.index(k,offsetBy:14)...n.index(k,offsetBy:15)])!)

Check it out!
This prints true and false, for truthy and falsy respectively.

NOTE: This only works until the year 9999, at 11:59:59 PM, because it uses Strings to compare the dates.