Does the day and day of the week need to be changed every day manually in casio watch ? or do they change automatically ?

SOURCE: Casio HD wristwatch-4-button

1. Press lower-left button to enter hand-setting mode (you will see a H-S appear in the LCD)

2. Hold the upper-left button until the LCD starts to flash

3. Press the lower-right button to advance the minute needle by 20 seconds. You can also hold for high speed advance.

4. If you need to advance the time by a long way, and don't want to hold down the lower-right button, then press both the right buttons at the same time and the time will advance automatically. Pressing any button will then cause the advance to stop.

6. Once you have set the time, press the upper-left button.

7. To return to time-keeping mode, press the lower-left button.

Bloody complicated, but easy when you get use to it. I travel quite a bit and this really pisses me off when I have to change the time, especially so when the needle can only move clockwise.

-Bala

SOURCE: change the day of the week

Most watches have a stem that you pull out to set the time. The little knob on the end of the stem is called a crown. For a day/date watch, there are two clicks. The first click when you pull out the stem is the day / date setting, the second click sets the time.

When you are on the first click, twisting the crown one direction changes the day of the week; twisting the other direction changes the date. If yours has only the date, it could be either direction depending on the manufacturer.

SOURCE: casio watch 3793 cannot change time

the best you can do follow these steps:
lests say
the top left button is a
the lower left button is b
the light button is c
and the lower right is d

to change digital time, when in time/date mode hold a untill seconds start flashing. then you can change the seconds. hit d do change seconds.

then you hit b wich brings yyou to Daylight savings, change with d
then hit b to change to hours, you can go up and down digits with d and C(LIGHT) then hit b to minutes and so on.
then hit a once to confirm and again to toggle from date to time

for analog time changing:
in time mode press a six times until it says: "h-s"
then hold a until the display flashes then press d for every minute you want to skip, you can also hold d and then press c it automaticly starts changing then hit d to stop(and maybe correct with a couple of "d's"
hit a to confirm.

there you go

SOURCE: Casio 1170 ATC-1200 watch needs to have batteries changed

I'll post in case somebody still needs this. This is the general procedure to switch the ATC 1200 from meters to feet. You can also switch the ATC 1200 (1170) from C to F. This is very helpful if you change the batteries and the watch gets reset to meters.

Also note, when you pull out the two batteries, you may not get the watch to come up. This is because of a race condition when the watch gets power. To fix this, look for the AC mark on the inside of the watch. Under this marking, in a little space to the left, are two copper pads. Short this out with a small screw driver to get the watch to ground zero.

To fix the Metric measurements:

1. Go to the home screen on the watch. This is when the the 3 letter abbr for the day is at the top. Also, if you cycle the mode button, it is the screen where the final beep is "high."

2. Then press the "memory" button, which will take the home display to the data screen. This shows current time, pressure and temperature.

3. Hold down the adjust button, until the set screen comes up.

4. Tab the mode/select button on the watch until you get a flashing C. Then press the memory button to toggle to F.

You can adjust all the measurements from this screen.

SOURCE: daylight savings time change casio

An example for G-shock: I searched for casio g-shock manual and got this: http://world.casio.com/wat/download/en/manual/

You enter model from back of watch and it gives you a searchable PDF manual.

For mine, model 2638 (and likely most G-shocks), you press and hold the upper left (Adjust) button until the City Code flashes. You then press the lower left (Mode) to enter DST mode then press the lower right (Receive) as it cycles through On, Off and Auto.
On moves 1 hour forward, Off moves 1 hour back. After you select, you press the upper left button (Adjust) twice and it's set. I would not pick Auto anymore as my watch is still set to the original DST days which were changed in the US years ago and no longer match, I don't believe the DST days used can be changed by the user and I don't believe Auto receive adjusts for DST.