我试图在R中将这个字符列转换为日期时间格式，但我似乎无法停止得到null结果。谁能帮帮我？
我还需要将时间和日期分成两个不同的列。首先我需要把它转换成日期时间格式正确吗？
picture of data
这是我尝试过的

#converting date into numeric format
date_numeric <- as.numeric(minute_sleep$date) #result was null so I will delete it and try again
remove(date_numeric)

#convering date into timestamp
new_time <- strptime(minute_sleep$date, format="%H:%M:%S", tz="") #result was also null DANG IT!!
remove(new_time)

#converting date into datetime format ATTEMPT 1
new_date_column <- as.POSIXct(minute_sleep$date, format="%m/%d/%YT%H:%M:%OS") #return was also null
remove(new_date_column)

#converting date into datetime format ATTEMPT 2
date_time <- ymd_hms(minute_sleep$date) #NULL RESULTS!!!!