Hold it so that the bottom edge of your hand is “resting” on the horizon. The bottom edge of your hand will be directly in line with the line between the land and the sky. You’ll want to hold it still and as close to parallel as you can to get the most accurate measurement possible.  No matter your location, the horizon should be a flat line between the sky and the ground. If you can't get a good view of the horizon due to mountains, trees or other obstructions, you'll have to make an approximate guess. Your measurement won't be perfect, but you'll at least have a general idea how many hours you have. If you can still see distance between the top edge of your hand and the sun, you'll need to take a second hand measurement. Holding your first hand still so that you don’t lose its position, place your other hand directly on top of it in the same flat, parallel way as your first hand. Keep your hand still and prepare for another movement.  If you do this correctly, the top edge of your first hand, your forefinger, will be lined up with the bottom edge of your second hand, your pinky finger. Keep your thumb out of the way; only your four fingers should be factored into the measurements. If you can still see distance between the top edge of your hand and the sun, you’ll need to measure with your first hand again. Holding your second hand steady without moving it, remove your first hand from below it and place it on top of your second hand. Keep your second hand still so you don’t lose your place. As you move your hands, stacking them on top of one another, remember how many hand widths you’ve measured. The count is a measurement of how many hand widths are between the horizon and the sun.  If the number of counts is large or you can't remember, ask a friend if you're in a group. You can stack your hands while the friend keeps count. If you're alone, you'll have to count carefully by yourself. Speak out loud as you stack your hands, adding each stack vocally instead of in your head. This will help you remember. Keep stacking your hands following the same method one until one of your hands reaches the sun. It's fine if the sun is partly obscured by one or more of your fingers. The exact position of your fingers will factor into your calculation of how much time is left before sunset, so be sure to hold your hand in place. If it’s later in the day and the sun is so low that you can’t fit your whole hand between the horizon and the sun, use only your fingers to measure the distance between the horizon and the sun. They’ll still be worth 15 minutes each.
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One-sentence summary -- Line up your hand with the horizon. Stack your second hand on top of your first hand. Stack your first hand again. Keep count. "Touch" the the sun. Use only fingers to measure late in the day.

Q: Pour white vinegar into a bowl or container. Wet a soft-bristled toothbrush in the vinegar. Rub the zipper gently but thoroughly with the toothbrush, on both sides of the zipper. You can use cola or lemon juice. Dip a toothbrush or cotton swab into the liquid and apply it to the zipper. Let it sit for a couple of minutes. Make sure to wash the area completely with water afterwards.  The phosphoric acid in cola breaks down and combats corrosion. Lemon juice contains the cleansing agent citric acid. Use a container of white vinegar or a vinegar and water solution. Add a small amount of baking soda (a sprinkle). Try to submerge only the zipper itself, if possible. If not, make sure that the material surrounding the zipper won’t be damaged by soaking it in vinegar. Either look it up or try soaking a test piece of material first. If you're having a salt encrustation issue with scuba gear, take off any parts you can that are not connected to the suit such as hooks, swivels, etc. Depending on how the zipper is mounted on your bag, you may be able to simply submerge the zipper and not the rest of the suit. There are various products, for example using silicone or wax, which are specifically designed for loosening stuck zippers. You can find these online, at marine supply stores, and at some auto parts stores. Typically the products are either in tubes or sold as sprays.  Follow the instructions of the lubricant product. Some lubricants are applied to all parts of the zipper, whereas others are for the outer teeth only. Apply the lubricant at room temperature. Use the zipper slider a few times to fully distribute the lubricant. Wipe off any excess lubricant.
A: Use a soft toothbrush and vinegar. Try alternatives to vinegar. Soak the zipper in vinegar and baking soda overnight. Use a lubricant made for zippers.

Article: Check how loose the chair legs are, as well as the back of the chair, by pushing and pulling them back and forth to see how much movement they have. There should be virtually no movement. You can either flip the chair upside down on a table or on another chair so that you can more easily access the problem area. This will also prevent any unwanted pressure on the legs or back of the chair when you are working. There are many types of strong wood glue products you can purchase to stabilize loose leg joints. When you locate a loose joint, push wood glue into the joint and let it dry completely before flipping the chair back over. Wipe away any access glue that comes out of the joint with a wet rag. To create a thicker wood glue consistency, try adding wood filler to the glue. A thicker mixture can better help stabilize wobbly chair legs. For very loose legs that seem to need more than glue, remove the chair leg completely, and use a wood-swelling liquid. Sometimes, dowels can shrink, causing chair parts to become loose. When you apply a wood-swelling liquid to the dowel, it will allow the dowel to once again become secure in the chair. If the hardware in the chair seem to be loose or no good anymore, you can replace them with new ones. Even if you don't want to remove the existing hardware, you can add reinforcement with more nails or bracket hinges to make the chair sturdy. When putting in more screws, make sure they are long enough to secure the wood, but not long enough to come through the other side of the wood.
Question: What is a summary of what this article is about?
Inspect the wooden chair for loose legs, screw, or nails. Position the chair you are working on upside down. Apply glue to loose joints. Expand the dowels with wood-swelling liquids. Replace the nails or wooden joint plugs.