Is there an expiry date on Facebook notifications?

[The Giant Potato]

I won't be accessing Facebook for the next 4 and a half months due to other priorities in life. I was wondering, should I receive a notification for a comment/like/wallpost, will it self-delete itself after a determined programmed amount of time?
I haven't "deactivated" my account (as I have done before, thus preventing notifications), I simply will just not 'log in' for this amount of time.

[Marie]

no

[Georgia]

They will delete themselves when they reach a certain limit, e.g. 250.

[Dinky]

I don't think so because you have archive where you can access old notifications

[Daniel]

Depending on How Many Notifcations you Get Will Determine if any Expire if you get barried with notifcations its possible some of it may expire

[Raj]

Actually there have no any specific date of expire date of facebook notification. it is depends on how much notification you have. if you have a large number of notification then your old notification will be expire and new notification will be shown

[Harry]

no, they don't expire .