```
LocalDate beginDate = LocalDate.now()
        .with(ChronoField.DAY_OF_WEEK, 1)
        .atStartOfDay()
        .minusDays(8)
        .toLocalDate();

```

I am getting the previous week begin date using the above code line. However I want to add HH:MM:SS format to this. I have tried different ways to get this. Tried using LocalDateTime instead of Localdate. But could not find `atStartOfDay()` method for LocalDateTime. Help me to add HH:MM:SS to `beginDate` variable