Please help us help you and fill where relevant:
Your LimeSurvey version: 5.6.56

I am experiencing an issue where, upon submitting a survey, the current date is not being saved,Instead of saving the current date, it saves a fixed date(Example 1980). Could anyone provide guidance on how to resolve this problem?
 

It's not an issue, it's a feature.
Manual:
[url] manual.limesurvey.org/Participant_settin...Anonymized_responses [/url]