The date arm in not on the day exactly - Citizen Eco-Drive Calibre 8700 Wrist Watch

Pull crown out 1 click to set day/date, set to one day behind actual date... Then, pull crown out an additional click to move hour/minute hands around to set exact date by hour/minute a complete 12-24 hour revolution if necessary to get AM or PM accurate for the proper day/date. :)

The date and actual name of the day are set separately on most watches. When you are in the mode to change your date, play around with the buttons and try to find a way to toggle to the days so that you can change it to the correct date. What kind of watch is it and I may be able to help. If you still have your owners manual it should say right in there exactly how to do it. If not you can search for it online if you know what kind of watch you have.

Your watch is 12 hours out of step.The date changes ever second rotation of the hour hand.

If you advance the time 12 hours, the date will change at midnight.

You may have to re-set the date.

Adjust the day of month (1-31) by pulling the crown pin out part way, and turning the pin counter clockwise, incrementing the date arm. Counterclockwise does nothing.

To adjust day of week (Mon-Sun), pull the pin out and rotate to turn minute/hour hands. Each time you pass 12:00, the weekday hand will increment by a half step.

You are very observant! Timex watches don't have a way to adjust the day.
However, if you turn the hands clockwise you will see the day advance.
So, heres the secret, follow exactly:
1. Turn the hands until the day of the week shows the day before. If today is Wednesday then turn the hands until the watch shows Tuesday
2 Adjust the date to the day before. If today is the 17th then adjust it to the 16th
3. Now pull the crown all the out and and advance the hands until the date changes to the correct date, 17 in this example. This happens at midnight. Continue the movement in a clockwise direction for a few more hours and you should see the day change to the correct day.
4. Now continue to move in a clockwise direction until you have the current time. Remember that your date/day changed at midnight so if the current time is after lunch(noon) you must continue past noon to get to the correct time. If you don't do this correctly your date will change every day at noon instead of midnight.
If you don't succeed the first time, try, try again! Good luck, Michael, Watchmaker to the Stars!

The crown wheel (winder) should have 3 positions, (1) the normal winding position (3) fully out; at this position the watch stops and the time can be adjusted.

(2) This position is between the 1 & 2 and is used to adjust the day and date. If you wish to change the date by winding the crown backwards or forwards.

Since watches can very a little, if turning the crown when in position 2 the date does not change, pull the crown to position 3 and turn the hands until you pass the midnight position, when the date will change and then re-set the time. If you wish to advance the time more than one day, when it changes, wind the crown backwards past the midnight position and then wind it forwards again. Repeat until the correct date is showing and then re-set the time. The exact distance you need to turn the crown to change the date will have to be found by experimenting!

you can get s set of instructions from their web site "fossil.com".

Go to the menu at the bottom of the page and select "customer care".

On the left under "Product Info" you will see "watch instructions", click on this and you will then see a list of diagrams for the various watches that they make and download the instructions.

You have to adjust the date every February (28 or 29 days), April, June, September and November (each 30 days). Self adjusting calendars are called Perpetual Calendars and this feature is quite expensive, especially in mechanical watches. Your watch has calendar ring with 31 days printed on and the simple calendar mechanism which is changing dates from 1 to 31 inclusive,day after day, so, when the 30-day month is ending and there is no 31st date to follow, your calendar is showing 31st anyway,instead of 1st of the next month. This is when you have to adjust date. Now about the date adjusting. If you pull out crown gently, you will notice there are two clicks (positions), not just one. So the first click, when crown is not pulled out fully, is exactly for day/date adjustment. If you pull the crown further out, watch is in hand adjustment mode. Try it carefully and you will find out the right position.
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If your watch is changing date before midnight (12 hours earlier as it should) - Pull out crown and turn watch hands clockwise for exactly 12 hours and push crown back. If it changes the date after midnight (12 hours later as it should) - Pull out crown and turn watch hands anti-clockwise for exactly 12 hours and push crown back. Don't do it from 00:00 till 04:00.

Do as follows:
1) At any time of the day pull the crown out and advance watch hands forward for EXACTLY 12 hours ( for example: if it's 6.35 on your watch, then after advancing hands it will be 6.35 again, just minute hand will be forwarded clockwise 12 full circles, while hour hand will be forwarded 1 full circle). Push the crown back in.
2) Pull the crown out to the date setting position and change to the desired date. Pull the crown back in.
Now your watch will be changing dates at midnight continuosly.

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