How to fix the missing patches that turn into NAT?

Missing time and date as NAT after importing large data from excel in table format! NOT ALL but some data is missing at different patches although the whole excel file contains same date and time format column. How to fix the missing patches that turn into NAT?

[KSSV]

YOu can generate the dates manually..if you know the time sampling.

[Arqam RAfi]

I have a very large data (one min resolution) for 2 years x 22 and looking for a short cut here.

Answer 1

[Steven Lord]

The fillmissing and/or retime functions (retime if you're storing your data as a timetable, fillmissing if your data is a vector, table, or timetable) may be of use.

Answer 2

[Peter Perkins]

It's possible that what's happening is that your timestamps are stored in the spreadsheet file as text, not as dates, and that some of them are exactly at midnight, and lack hh:mm:ss.

It's also possible that you just have junk in some of the cells in your spreadsheet. You needm to post a small example, including how you are reading the file.