Finally? a way to use Airtel night plan during then day.
After Airtel launched there new Android plan,

FOLLOW THE STEPS BELOW
.First of all Subscribe for the usual Airtel 1GB 30
 days plan for 1200 by Texting BSM to 440
 


 *.When the Data bundle has been exhausted,DO
 NOT CANCEL THE VALIDITY PERIOD,
 Then Subscribe for Airtel 3.90GB Night Plan for
 2500 by dialing *141*712*7#
 
 *.You should now be able to use the Airtel Night
 plan During the day Because of the existing
 Validity period from the 1GB Plan

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