For me it's 'never'. I don't usually follow the news at all. I know that it's not a good habit but I can't help it. I don't really like spending time to read any news. If you were to ask my company CEO's name, current President, Prime minister, I don't think I can answer right away.
That's how bad it is for me. Still, I do listen to my family members talk about stuff and I do know what's going on around me(Well, a little)
I will have to work on following news in the near future...