Solder Paste Shelf Life

What is the Shelf life for the solder paste that Digi-Key carries?

Kester Solder paste shelf life 3-6 months. Should be keep refrigerated

Chip Quick Solder Paste shelf Life - Leaded solder - 1 year when refrigerated and 6 months Not Refrigerated
Lead Free Solder - 6 Months Refrigerated and 2 months Not Refrigerated

Loctite Solder Paste Shelf Life - Lead Free 6 months (Date of Manufacturer) (Refrigerated)
Leaded - 12 Months (Date of Manufacture) (Refrigerated)