I forgot how to set my lamp to turn on at 4PM and turn off at 12 midnight.

change to 12 clock
however a 24 hour clock has the same times up to midday -- midnight to midday --- the hours are 1 to 12 oclock after midday you take 2 off the reading and it is the same time as a 12 hour clock
so 1300 is 1 o'clock, 1400 is 2 oclock ,1500 is 3 o'clock
1800 is 6 o'clock 2400 is midnight
the minutes are the same regardless so 1.30 is 1.30 after midnight or 1330 after midday or 1.30 after midday now for example --if you want the timer to start at 6am you set the timer to start at 6 am to switch off at 8 am set switch of at 8 am
it you want the timer to start at 6 pm set it at 1800 and switch off at 10pm set it at 2200 hrs

probably because you have it set to 12 pm midnight and not 12 noon so at 12 noon it is actually midnight when the date will change
reset the time of the day to am or pm and any pm settings will change the date at 12 midnight.

Simply advance hands 12 hours forwards (clockwise). Just pull out crown to the time setting position and turn the watch hands forwards if the date is changing before midnight. If the date is changing after midnight - turn the hands 12 hours backwards. Don't do this when the actual time is between 10pm - 2am.

When you pull the crown out there are two positions. The first is the day/date setting position. Turn the crown one way and the date changes, the other direction the day of the week changes. Set both the day and date to yesterday. It will become evident why when you finish. Now pull the crown all the way out and notice when you turn the crown the hands move. Advance the hands to the 12 o'clock position in a clockwise direction. As you pass 12 the date may begin to change. If not then you now know that was noon and not midnight because the date only changes at midnight. If the date did not change advance the hands all the way around 12 hours. This will now be midnight and the date should begin to change. It may be almost instantaneous or may take until 12:30 or so. Continue advancing the hands to 4 o'clock. You should see between midnight and 4 the day of the week advance. Now the day/date are correct for today and the final step is to set the correct time. Remember, you are now set a 4 AM. Advance the hands to the correct time. That means if it is 3 in the afternoon, you must advance past noon to 3. You cannot go backwards. That would be 3 AM!

The date change occcurs at 12 O'clock but your watch is set so that it changes at 12 noon rather than 12 midnight. This is easy to correct, simply wind your watch on 12 hours and it will change at midnight.

sometimes during time set, the hands are set to change date at day time.
check it your date turns during 12 noon, if yes move the hands clockwise until you set your time and date on sync.
say you want to set your watch date:10th and time:10:15am
adjust your date at 9th
then move your hands clockwise until the date turns to 10th at the 12 thats the 12 midnight.
then continue moving your hands clockwise until you reach 10:15am

Your watch thinks your noon is midnight.

Wind the hands forward 12 hours and the date change will be at midnight. You will have to re-set the date if it gains a day when doing this.

Push the mode button twice to enter the "set time" mode. Once the digital display is blinking, keep pushing "mode" until the PM display section in the upper left corner comes on. Once that happens you are back to the 12 hour clock. To set the clock, use the 1-4 buttons to set the hours and minutes.

Hope this helps.

This is an analog watch.

Pull the set stem to the set position and advance 12 hours.

Hope this tip helps.

r/
David

To sync the correct 12 hour with your day you need to set the date to the day before (if today is 21, then make sure the day window reads 20). Then spin the analog hands until the the date window turns to 21. At this point your watch is reading 12 AM (midnight). Then keep turning to set the correct time. If it is 9 am then stop the hands the first time you hit the 9 marker. If it is 9pm, then keep turning until the SECOND TIME your hour hand meets the 9 marker. This is now set for 9 pm.
That's how you do it. If you need more clarification let me know.