See list of it below:
1GB for N200 (9PM – 6:am)
2.5GB for N500 (9PM - 6am)
5GB for N1000 (9PM - 6am)
Will it Work on my Device?
Yes, it will work on all devices including PC excluding blackberry OS 7 devices and many others browsing devices you can think off.
How Can I Get it?
From your device, simply dial *198#>>Choose 2 and then 8.
Is it helpful or not? Or does it work for you?