How can I set the day of the week off one day weather station 01535S ?

yourspacebarisbroken. Ifixedthequestionforyou.

That model number looks wrong I presume it is a weather station? All questions need full 'make model (what it is) please.

https://www.lacrossetechnology.com/pages/where-do-i-find-a-manual-for-my-station

308-2316

https://www.lacrossetechnology.com/products/308-2316

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Impossible to answer. On WHAT!!!

All questions need FULL 'make model (what it is)'.

Google

make model manual

Normally on that type of device you have to set the YEAR, and then the MONTH like on my Weather Station Indoor Unit..
..

https://www.acurite.com/temperature-and-humidity-sensor-06002rm-592txr.html

Hold down the mode button for a few seconds > display starts to flash year > use +/- buttons to set year > press mode to present the month/day/time etc, again using +/- buttons

http://www.oregonscientific.com/us/en/Weather/Weather-Station-Parts

where did you buy it?

Found the manual for your weather station. Click the link below and then click download the document.
http://www.retrevo.com/support/Oregon-Scientific-RGR122-manual/id/423ag602/t/2/

Have a great day.
Jim

Hi Andy, I think I have found a solution to your problem. With the time and day set, clear the program for each station by selecting Start 1, station 1, off, and repeat for each station. Then select Start 1, Station 1 and hold down the Day button. The Mon for Week 1 of the cycle should appear. Then if you hold down the Off button, the Mon will scroll down to your allocated watering day of week 1 eg Sat. Then, Hold down the Day button again until the next day appears eg Sun in my example above. If you again hold down the Off button, that Sun will scroll through to your allocated day of the week in Week 2. Hope this helps. Next job will be to change it when restrictions change in summer! Martyn (Bassendean Perth)

check if you have the US standard or international standard, like FD. or CD...........

and check your pda the loation where you set is right.

and try to reset a new website for your PDA weather software for updating. becasue different websites may be vary