![photograph of a year-view calendar on desk](http://cdn.nrf.com/sites/default/files/styles/crop_750_486/public/2018-11/calendar.png?itok=8IQIl6Yt)
4-5-4 Calendar
The 4-5-4 Calendar ensures sales comparability between years, dividing years into 4-, 5- and 4-week months.
![Tina Sharkey, CEO and Co-Founder, Brandless speaks at NRF 2019](http://cdn.nrf.com/sites/default/files/styles/crop_310_310/public/2019-02/46044008104_afd7d7d3ff_k.jpg?itok=gEqXkCVZ)
NRF On Demand
Curated content exclusively for NRF members featuring industry best practices and applicable insights from NRF events.
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![Walmart App Icon](http://cdn.nrf.com/sites/default/files/styles/crop_310_310/public/2018-10/shutterstock_1051789430%20%281%29.jpg?itok=j6H8on4S)
Top Retailers
NRF's annual lists of the nation’s — and the world’s — largest and fastest-growing retailers.
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NRF Research
NRF produces research throughout the year responding to retail industry trends, consumer sentiment and economic forces.
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![active shooter retail safety](http://cdn.nrf.com/sites/default/files/styles/crop_310_310/public/2018-10/active%20shooter.jpg?itok=N5cQBpBr)
Retail Safety and Security Tools
Tools and research for retail loss prevention and asset protection professionals.
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