Time decay works against option buyers each session. Sizing positions so that a full loss of premium stays within your limits.
This article is educational. It describes how a concept shows up in Indian index and stock options. It does not recommend a trade, a strike or a position size.
What to look for
Time decay works against option buyers each session. Sizing positions so that a full loss of premium stays within your limits. The useful question is what would make the observation stop being relevant, and how large a loss of premium you can accept if it does.