How do you set this clock after changing the batteries

You likely need a new one as factory reset is done via the Set Button..

La-Crosse Support

https://www.lacrossetechnology.com/products/ws-8248

https://lacrossetechnology.zendesk.com/hc/en-us/articles/5278162570395-Atomic-Clock-Factory-Reset

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Question edited for clarity and toss in some CAPS.
question moved from Audio Players category.

Set Up starts here in the manual

https://www.manualslib.com/manual/1591844/Lacrosse-Bbb86088.html?page=4#manual

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They make lots of models. So lots of videos and manuals here. Some do it from a time server once you set the time zone.

https://www.google.com/search?q=set+my+La+Cross+atomic+alarm+clock

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Hello, William -

If you are asking about a La Crosse Technology Atomic Clock, then . . . see the instructions (24 page PDF document, Adobe Acrobat Reader software - free - needed) here:
https://www.lacrossetechnology.com/media/catalog/product/5/1/512-811-bbb.pdf

Best wishes.

download the manual from here: http://www.manualslib.com/manual/533191/La-Crosse-Technology-Wt-8005u.html

WS 8418AL IT Tomorrow Weather Today by La Crosse Technology

When the battery is installed the second hand will advance eight seconds (2 seconds per step x 4 steps). The clock is now searching for a signal. For the initial setting it is recommended to stand the clock in an upright position near a window. Within five minutes the clock will either receive the WWVB signal and set itself to the exact time, or it will determine that the signal is not receivable at its current location and time of day. If a signal is not receivable it will fast-forward the hands to the 4, 8, or 12 o'clock position and search for WWVB each hour until a signal is received. If the time is manually set the clock will continue to periodically search for a signal and automatically reset the hands when the signal is received.

I think we're not talking about a WT-3101. What model is YOUR clock?

This site lists several including some desk models on two pages and each has unique downloadable instructions.

http://www.klockit.com/depts/AtomicClocks/dept-52.html

The easiest way to reset it would be to change it to Eastern time - that will give you the correct Central DST.

Bill B

Press and hold the SET key for 5 seconds. Press set key repeatedly until TZ is displayed on the bottom. Use the "+" key to set the time zone. -8 is for Pacific Time Zone, it will display -8 PST in the display. Press set to go to the DST setting, and so on until you've cycled through the options.