You have two totally different types of seeds because one is a palm and one is a cycad. If I had to guess, I'd say it is too late for both types. I can't tell the difference in palm seeds on viability, but I can tell about cycads. Since the seeds have not been kept moist or protected in any way, I'd just give them the float test. Throw them in a bucket of water and see if any float, which most likely, all or most all of them will. You have a chance with any that sink. If you have a lot of the sago seeds, you can cut one in half, along the natural seems of the seed and look to see how bad off they are. If you have lots of them, cutting a couple gives you a real good idea of what you are dealing with.