add below formula on lable.
If(
Now() <= DateValue("03/19/2024") + TimeValue("20:00:00"),
If(
DateDiff(Now(), DateValue("03/19/2024") + TimeValue("20:00:00"), TimeUnit.Days) = 0,
Concatenate(
"0 days ",
Text(Mod(DateDiff(Now(), DateValue("03/19/2024") + TimeValue("20:00:00"), TimeUnit.Hours), 24), "[$-en-US]0"), " hours ",
Text(Mod(DateDiff(Now(), DateValue("03/19/2024") + TimeValue("20:00:00"), TimeUnit.Minutes), 60), "[$-en-US]0"), " minutes "
),
Concatenate(
Text(DateDiff(Now(), DateValue("03/19/2024") + TimeValue("20:00:00"), TimeUnit.Days)), " days ",
Text(Mod(DateDiff(Now(), DateValue("03/19/2024") + TimeValue("20:00:00"), TimeUnit.Hours), 24), "[$-en-US]0"), " hours ",
Text(Mod(DateDiff(Now(), DateValue("03/19/2024") + TimeValue("20:00:00"), TimeUnit.Minutes), 60), "[$-en-US]0"), " minutes "
)
),
"0 days 0 hours 0 minutes"
)